52V 750 W rear hub · 92 N·m · 832 Wh LG cells · single speed · 20 mph as shipped · 80 mm fork · 180 mm hydraulics · 440 lb payload · 82–92 lb · $1,899 · verified September 5, 2026

Quick AnswerThe Eunorau FLASH LITE 2.0 is the $1,899 entry to Eunorau's three-battery FLASH platform: a 52V 750 W rear hub with 92 N·m, an 832 Wh pack, two more bays, a single-speed drivetrain and 20 mph as shipped. It suits the rider who wants the moped frame and will spend the $600 saved over the mid-drive on batteries.

Every figure on this page comes from Eunorau's own documents, opened and archived on 5 September 2026. Two things to settle before ordering: the shipped charger is a 2 amp unit, which puts an eight-hour floor under a full charge, and the bike ships set to 20 mph, a figure we confirm in writing on the unit we send you.

Order the FLASH LITE 2.0 with free shipping to the lower 48, browse the Eunorau range, or read on.

Takeaway

  • One motor, one gear, three bays. The LITE keeps the FLASH platform's modular battery system and its 440 lb payload, and drops the mid-drive, the eight-speed drivetrain and the rear shock. Eunorau's own FAQ routes the "tight budget, mostly city commuting" buyer here.
  • The charger is where the price cut lands. A 16 Ah pack on a 2.0 A charger is eight hours before losses. The mid-drive and AWD trims ship 4.0 A chargers; Eunorau sells the FLASH 4 A unit for $79, and the battery's own spec sheet lists 4 A as its standard charge.
  • 750 watts is a boundary word, and it decides half the country. Screened at 750 W and 20 mph against all 51 jurisdictions, reading each statute's own wording: 26 accept it, 22 do not, because twenty-one definitions say "less than 750 watts" and a motor rated at exactly 750 is not less than 750. Two states publish no definition; Hawaii could not be read.
  • Same money buys the step-through. The FLASH LITE ST is $1,899 too, with a 17.5-inch standover against this frame's 30.7. The frame that fits you is not a paid upgrade.

Eunorau FLASH LITE 2.0 review cover: the Lunar Dust bike at a city plaza with the headline one motor, one gear, three battery bays

What's on this page

Who the FLASH LITE 2.0 is for

A $1,899 trim of a $2,499 platform, same frame, same three battery bays, same 440 lb rating: that is what put this bike in front of you. Eunorau added it under the mid-drive FLASH 2.0 and the two-motor FLASH AWD 1.0 in November 2025, the date its product feed carries. The bet a buyer makes is simple to state: the parts that were removed are parts you would not have used.

Get that bet wrong and the cost is the second bike. A rider who needs gears for a climb, or a rear shock for a rutted path, buys the LITE and then buys the FLASH 2.0 a year or two later, and Eunorau's own specification says which parts the second bike adds. A rider who needs neither pays $600 for a motor and a drivetrain that sit idle on a flat commute.

So this review is built around one decision: is the FLASH LITE 2.0 the right amount of FLASH for the way you ride? Eunorau's own product FAQ draws the line as "tight budget, mostly city commuting on decent roads", and the sections below test that sentence against every number the maker publishes.

The differentiator, in one line: the LITE 2.0 is the only single-motor, step-over FLASH, and its published 440 lb payload is the same figure Eunorau prints for the $2,499 trim. If the platform is what you want, this is the cheapest door into it.

Eunorau FLASH LITE 2.0 in Lunar Dust with a rider seated and stopped on a city plaza, skyline behind

Eunorau's own frame of the Lunar Dust LITE 2.0, rider stopped with a foot on the pedal. The rear hub and the single sprocket are visible behind the crank; this is the trim as it ships, on the paved surface it is written for.

How we verified this Eunorau FLASH LITE 2.0 review

Verification basis: spec-verified. We sell this bike; every figure on this page is its maker's published specification, confirmed at the maker's page and recomputed. What we opened. Eunorau's rendered product page and its product feed for the same handle, both retrieved and archived on 5 September 2026; the maker's pages for the 4 A FLASH charger and the 16 Ah main battery; its warranty, shipping and return pages; its UL announcement; the product pages of the three sibling trims; and 20 manufacturer photographs, each opened at full size. Our own listing was read through the store's administration interface the same day.

What we computed. Watt-hours from volts and amp-hours; hours-to-full from amp-hours and charger amps; the implied watt-hours per mile under each of Eunorau's three range claims; and a charger census across 34 Eunorau catalog pages read from the maker's own storefront. The script and the output file are saved and re-runnable, and the source register names them.

What we screened. Eunorau's published 750 W and 20 mph against the e-bike definition of all 50 states and the District of Columbia, and again at the feed's 28 mph, using the same statutory table every review on this site runs; the federal model for those definitions is 15 U.S.C. § 2085(b). Both screens are saved, one row per jurisdiction with its section and its reason.

The corpus. Thirty distinct sources were consulted and every one was retrieved and read. California's § 312.5 was read from that morning's Internet Archive capture after the legislature's site timed out twice, and the Consumer Product Safety Commission's warnings index is paged, so only ten notices could be enumerated beside the full recall search. The source register grades every one.

A note on the reviews widget. Eunorau's LITE 2.0 page carries a "243 reviews" panel, 200 of them five-star. The visible entries praise "the full suspension" and name the "Flash 2.0", which reads as a panel aggregated across the FLASH family. We treat it as the maker's own testimonial block and not as evidence about this trim.

Where the questions came from. Every question this page answers was observed being asked, in 1,549 phrasings harvested from five sources on 5 September 2026 and an AI-answer panel of six prompts; the FAQ is built from them and the denominator is in the source register.

Corrections: support@redtailebikes.com. A verified error is fixed on the page and logged in the limitations.

Eunorau FLASH LITE 2.0 specifications

Every row is quoted from Eunorau's published specification for the FLASH LITE 2.0, retrieved 5 September 2026. Where the maker's page and its product feed differ, both figures appear.

Price $1,899 on our store and on Eunorau's, 5 September 2026
Colorways Moon Black · Lunar Dust
Motor "52V750W Rear Motor with 92N.m Torque"
Controller "52V" — no current rating published
Assist sensor Not published
Pedal assist "Class 1~4, Default Class 2"
Throttle Thumb throttle
Maximum speed 20 MPH (page) · 28 MPH (feed) — see below
Battery 52V 16Ah, "LG Cells" per the battery's own page (832 Wh)
Optional batteries Top tube 52V 21Ah ($699) · down tube 52V 17Ah ($599)
Claimed range "Up to 65 Miles (135 Miles Dual Battery | 220 Miles Triple Battery)"
Charger "Standard 2.0 A smart charger"
Charge time Not published
Display BC182 LCD; "EUNORAU GO" app
Frame Aluminum alloy 6061, step-over
Fork "EXSHO STRONG-DH 80mm Travel Fork"
Rear suspension "Rear Drive: None"
Brakes Hydraulic disc, 180 mm rotors front and rear, levers with motor cutoff
Drivetrain "Rear Drive: Single Speed"; "Cassette 44T / 36T"; 170 mm forged crank
Wheels and tires 20-inch black alloy; CST 20" × 4.0"
Lighting Front light; brake-activated tail light integrated into the battery box
Saddle "JUSTGK Saddle" — the two-person plush bench
Bike weight 82–92 lb
Total payload capacity 440 lb
Recommended rider height 5'2" – 6'4"
Geometry Seven measurements published, see fit
UL "UL CERTIFIED: Yes" on the page header; no standard number or file number on the product page, see below

The two Eunorau FLASH LITE 2.0 colorways side by side: Moon Black and Lunar Dust

The two colorways Eunorau publishes for the step-over LITE: Moon Black and Lunar Dust. The step-through LITE ST comes in Ivory and Midnight Black instead.

Drive side of the Eunorau FLASH LITE 2.0 in Moon Black: rear hub motor, single chainring, chain tensioner, bench saddle over the rack battery box

Drive side, Moon Black. One chainring, one rear sprocket, and a spring-loaded tensioner behind it keeping a single chain tight. The motor is in the rear hub; the battery is the black case under the bench.

750 W rear hub · 832 Wh with two more bays · 440 lb payload · 20 mph as shipped. Moon Black or Lunar Dust, both orderable on 5 September 2026, free shipping in the contiguous US. Warranty claims on a bike bought here go through us.

See the FLASH LITE 2.0 — $1,899

What "LITE" takes off the FLASH, and what it keeps

The LITE 2.0 is the FLASH frame with the mid-drive replaced by a rear hub and the eight-speed drivetrain replaced by one gear. Everything that made the platform distinctive in Eunorau's own description survives: the three battery positions, the 20×4.0 tires, the bench saddle, the 440 lb rating. What the $600 saving removes is the Truckrun mid-drive, the Shimano shifter and the rear shock that the FLASH 2.0 page lists.

Eunorau writes the trim's brief itself, on the product page, calling it "the entry point into EUNORAU's 'FLASH' long-range family". It is the entry point into the FLASH family in the price list as well as the copy. The LITE 2.0, Eunorau continues, "keeps the family's signature modular triple-battery system and 20×4.0 fat-tire commuter look, but pairs it with a lighter rear-hub motor and a simpler single-speed drivetrain".

The same page's FAQ answers the question a buyer actually types, "How do I choose between FLASH LITE 2.0, FLASH AWD, and FLASH 2.0?", in three lines. Tight budget and city roads go to the LITE; sand, snow and steep grades to the AWD; "full suspension comfort and more power, budget allows" to the FLASH 2.0, in the words of Eunorau's own FAQ.

The table below sets the three trims side by side from their own specification pages, all read 5 September 2026: the LITE 2.0, the AWD 1.0 and the FLASH 2.0. A blank cell means Eunorau does not publish that row for that trim.

FLASH LITE 2.0 FLASH AWD 1.0 FLASH 2.0
Price $1,899 $2,099 $2,499
Motor 52V 750 W rear hub, 92 N·m Dual 52V 750 W hubs, 92 N·m each 52V 1000 W Truckrun mid-drive, 220 N·m
Drivetrain Single speed, 44T/36T Single speed, 44T/36T Shimano 8-speed
Fork EXSHO STRONG-DH 80 mm EXSHO STRONG-DH 80 mm Suspension fork
Rear suspension None None Rear shock
Charger 2.0 A 4.0 A 4.0 A
Standard battery 52V 16Ah 52V 16Ah 52V 16Ah
Claimed range, 1/2/3 packs 65 / 135 / 220 mi 65 / 135 / 220 mi 65 / 135 / 220 mi
Maximum speed (page) 20 mph 20 mph 20 mph
Weight 82–92 lb 82–92 lb 82–92 lb
Payload 440 lb 440 lb 440 lb
Reviewed this page review review
On our store $1,899 $2,099 $2,499

Two rows do the deciding. The drivetrain row is a single speed on both hub trims, and a single speed on a 92 N·m hub is a different proposition from a single speed on a 220 N·m mid-drive. A hub motor's pull does not change with the gear you are in; the chainring and sprocket only govern how fast your legs turn.

The charger row is the one nobody prints in a comparison, and it is the row where the LITE's price cut is felt every night. The next section but one is about it.

Price history. When Electrek reported the platform's launch on 13 April 2023, the base configuration was described as "a single rear 750W hub motor and a single 52V battery" starting at $1,499. The LITE 2.0 is that configuration's descendant, at $1,899, with the 80 mm fork, the 180 mm hydraulics and the current battery bays. Electrek's figure is a journalist's report of a launch price, and we cite it for history only; the price that governs is the one on Eunorau's page today.

Rear three-quarter view of the Eunorau FLASH LITE 2.0 in Lunar Dust showing the rack battery box, the integrated tail light and the rear hub motor

Lunar Dust, from behind. The battery box sits inside the rack under the bench, with the tail light built into its rear face; Eunorau says the light comes on under braking without being switched.

Takeaway

  • Buy the LITE for the platform, and know what the discount removes. The three bays and the 440 lb rating are the FLASH; the rear hub and the single gear are the trade.
  • Eunorau's own routing: city roads and a tight budget here; traction to the AWD; suspension and power to the FLASH 2.0.
  • The $600 saved is most of a second battery at Eunorau's $699 and $599 prices, which is the honest way to spend it if range is why you looked at a FLASH at all.

One range table, three trims

Eunorau publishes one range table for the whole FLASH family: 65 miles on one pack, 135 on two, 220 on three. The LITE 2.0 page prints the same three figures the mid-drive and the AWD carry, 65 / 135 / 220 miles published for 1 / 2 / 3 batteries.

Its FAQ adds the condition that matters: 220 miles "is the theoretical maximum with all three batteries installed on the lowest assist level (PAS 1)".

Divide each claim by the energy behind it and the assumption appears. One pack is 52 V × 16 Ah = 832 Wh, and 832 ÷ 65 = 12.8 Wh per mile. Two packs, with the 21 Ah top-tube unit, hold 1,924 Wh; 1,924 ÷ 135 = 14.3. All three hold 2,808 Wh; 2,808 ÷ 220 = 12.8 again.

Our FLASH 2.0 review measured that assumption against the 87 bikes on our shelf that publish both a pack and a matching range and found it sitting at the median. The caution it deserves is the caution the whole category deserves, and no more. The maker's table is internally consistent; whether anyone rides at 12.8 Wh/mi is the open question.

What changes on the LITE is the motor under the table. A hub motor at 92 N·m pulling 82 to 92 lb of bike plus rider on 4-inch tires will not see 12.8 Wh/mi outside the conditions Eunorau names: PAS 1, and by implication flat ground and light assist.

Use 20 Wh/mi for a mixed ride with real assist and the shipped pack gives about 42 miles; use 25 for throttle-heavy riding and hills and it gives about 33. Those are the numbers to plan a week around, and the arithmetic is yours to redo once you know your own rate.

The batteries are sold separately, and the maker says so. "Only one 52V 16Ah battery is standard; the top-tube 21Ah and down-tube 17Ah batteries are optional add-ons", the FAQ reads. It advises buying "based on your actual riding range" because "extra batteries add weight".

Eunorau prices the 21 Ah second pack at $699 and the 17 Ah third at $599. The 220-mile bike therefore costs $3,197 before tax, and the 135-mile one $2,598.

Per watt-hour, the add-on packs are the better buy. $699 for 1,092 Wh is $0.64 per Wh and $599 for 884 Wh is $0.68, against $2.28 per Wh for the bike as shipped. The takeaway above rests on that arithmetic: if range is the reason you are on this page, the second pack is where the LITE's discount belongs.

Close crop of the Eunorau FLASH LITE 2.0 rack battery box under the bench saddle, with the frame's second and third battery positions visible on the top tube and down tube

The shipped pack lives in the rack. The top tube and down tube each carry the mounting points for an optional pack, which is the whole reason the frame is shaped the way it is.

The eight-hour floor: the charger, censused across Eunorau's range

As shipped, the FLASH LITE 2.0 needs eight hours to fill its pack, and that is a floor. Eunorau's specification lists a "Standard 2.0 A smart charger" and publishes no charge time. A 16 Ah pack on a 2 A charger is 16 ÷ 2 = 8.0 hours at perfect efficiency with no taper at the top of the charge.

Real chargers lose some of each hour to both, so the true figure is longer. With all three packs installed, 54 Ah on the same 2 A unit is 27 hours.

Eunorau publishes a figure for the same pack and the same charger one page over. The FLASH LITE ST's product page, which ships the identical 52V 16Ah pack with the identical 2 A unit, answers "How long does the battery take to charge?" this way: "Using the standard 2A charger, the 52V 16Ah battery typically requires approximately 8–10 hours for a complete charge."

Our floor and the maker's own range agree; the LITE 2.0's page does not publish a charge time, and the LITE ST's does.

This is the row where the LITE's $600 saving is easiest to see. The FLASH 2.0 and the FLASH AWD 1.0 both list a "US standard 4.0 A smart charger", which halves every figure above: 4.0 hours for the shipped pack, about 13.5 for three. Same battery, same bays, half the wait.

Category framing first, because a 2 A charger is the industry's normal. We censused every product page Eunorau publishes with a charger row, read from the maker's own storefront on 5 September 2026. Of 34 catalog pages, 19 publish a charger; 16 of those 19 ship a 2.0 A unit, two ship 4.0 A (the two FLASH siblings) and one ships 10 A (the R1+ dirt bike). Fifteen pages publish no charger at all.

Across the 19, the shipped-charger floor runs from 4.0 hours to 12.5, with a median of 7.5. The LITE 2.0's 8.0 sits fourth-longest, behind the FAT-HD's 25 Ah pack and the 17.5 Ah packs on the SPECTER-S and the URUS, all read from the same catalog. The dataset is saved and the register names it.

A Reddit commenter in our harvest put the same point in one line, "most ebike chargers are gonna be 2 amp output". A rider's generalization, cited as one, and consistent with what Eunorau's own catalog shows.

Trim Shipped charger Shipped pack Hours to full, floor Three packs, floor
FLASH LITE 2.0 2.0 A 16 Ah 8.0 h 27 h
FLASH LITE ST 2.0 A 16 Ah 8.0 h — (two bays)
FLASH AWD 1.0 4.0 A 16 Ah 4.0 h 13.5 h
FLASH 2.0 4.0 A 16 Ah 4.0 h 13.5 h

The faster option costs $79, and the battery's own page lists 4 A as its standard charge. Eunorau sells a 52V 4A FLASH charger, "Output Voltage: 58.8V, Charger Current: 4A", at $79, and notes it "can only be compatible with EUNORAU FLASH". The 16 Ah main battery's product page lists "Standard Charge 4A" and "Charger 4A charger" as the pack's own parameters.

So the pack is specified for 4 A charging by the maker; the LITE 2.0 simply ships with the slower of the two chargers Eunorau makes for it. Nothing here implies the 2 A unit is the wrong charger for the pack. A slower charge is gentler on cells, as more than one owner in our forum harvest argued, and the trade is time.

What it costs in electricity is almost nothing. The U.S. Energy Information Administration's Table 5.6.A puts the June 2026 average residential price at 18.34 cents per kilowatt-hour. An 832 Wh pack is 0.832 kWh, so a full charge is about 15 cents before charger losses, 29 cents in California at that state's 34.74 cents, and 13 cents in Texas at 15.94. Even the 220-mile, three-pack fill is under 60 cents at the national average.

Eunorau FLASH LITE 2.0 cockpit and headlight: the round LED headlight, the BC182 display and the thumb throttle on the left grip

The cockpit: round headlight on the fork crown, BC182 display and the thumb throttle. The display is where the "Class 1~4" setting lives; the charger port is on the battery case, under the bench.

Takeaway

  • 8.0 hours is the number, and it is a floor. 16 Ah ÷ 2 A, before losses; Eunorau's own sibling page says 8–10. Three packs on the same charger: 27 hours.
  • Sixteen of the nineteen Eunorau bikes that publish a charger ship 2 A. The FLASH 2.0 and AWD are two of the three exceptions; the LITE is the platform's normal.
  • Eunorau's own $79 4 A charger halves the wait, and the battery's own spec sheet lists 4 A as its standard charge. Budget for it with the bike if you ride daily.
  • A full charge costs about 15 cents at the national average residential rate.

$1,899, free shipping in the lower 48, Shop Pay installments at checkout. Tell us at order time whether you want the 4 A charger sourced with it and we will say where it is in stock that week.

Order the FLASH LITE 2.0

20 mph on the page, 28 in the feed, "unlockable" on both

Plan around 20 mph, which is what Eunorau's page says ships, and treat the higher figure as a setting you should ask about before you change it. The rendered specification reads "Maximum Speed: 20 MPH" and the header block reads "CLASS: Class 2 · Speed limited · Unlockable". The product feed for the same handle, read the same minute, reads "MAXIMUM SPEED: 28 MPH".

Eunorau's FAQ on the same page bridges the two: 20 mph "is the standard limit for Class 2 e-bikes", and "if you want a higher top speed, you can unlocked to Class 3". This is not a LITE-specific pattern. Our FLASH AWD 1.0 review censused Eunorau's catalog and found the same page-versus-feed split on three products, this bike among them, with the other 21 comparable products agreeing across both surfaces.

The pattern is a documentation question for the maker, and it is on the list of questions we are putting to Eunorau in the ordering section. Until it is answered, the page's figure is the maker's statement of what ships.

Why the number decides more than the class. The federal reference point, 15 U.S.C. § 2085(b), defines a low-speed electric bicycle as a vehicle "with fully operable pedals and an electric motor of less than 750 watts (1 h.p.), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than 20 mph." State definitions borrow that shape and set their own limits.

So we ran Eunorau's published figures against all 51 US definitions twice: once at 750 W and 20 mph with a throttle, once at 750 W and 28 mph with a throttle. Each row of the screen carries its state's section; the federal § 2085 is the model most of them follow.

Input read from Eunorau's documents QUALIFIES OUTSIDE DEFINITION NO STATUTORY DEFINITION COULD NOT READ
750 W, 20 mph, throttle (the page) 26 22 2 — Alaska, Kentucky 1 — Hawaii
750 W, 28 mph, throttle (the feed) 0 48 2 1

Twenty-one definitions turn on a single word. Alabama, Arizona, Arkansas, Connecticut, Florida, Idaho, Illinois, Kansas, Louisiana, Maine, Mississippi, Missouri, New Hampshire, New Jersey, New York, Ohio, Tennessee, Texas, Vermont, West Virginia and Wyoming write the motor as less than 750 watts. A motor rated at exactly 750 is not less than 750, so this bike sits outside those definitions on the maker's own figure. Twenty-six jurisdictions write "750 watts or less", "not more than 750 watts" or an equivalent, and it meets those.

Three rows are neither. Alaska and Kentucky publish no e-bike definition for anything to sit inside. Hawaii's publisher answered every route we tried with an error on 5 September 2026, so Hawaii is recorded as not read rather than counted as a pass. California is outside for a separate reason, below.

At the feed's 28 mph the wattage argument stops deciding anything: no definition in our table permits throttle propulsion above 20 mph, so the bike sits outside all 48 that could be read. Which of Eunorau's two figures describes the bike in your garage is the whole question.

California asks a different question. Vehicle Code § 312.5(d)(1), as amended by SB 1271 (Stats. 2024, ch. 791) and in force since 1 January 2025, says a vehicle "that is intended by the manufacturer to be modifiable to attain a speed greater than 20 miles per hour on motor power alone or to attain more than 750 watts of power" is not an electric bicycle and "shall not be advertised, sold, offered for sale, or labeled" as one. The same section, at (c), requires "a label that is permanently affixed" stating class, top assisted speed and wattage.

Eunorau's header reads "Speed limited · Unlockable" and its feed reads 28 mph. Whether a limit a display setting can raise is what the subsection means by "intended by the manufacturer to be modifiable" is a question the statute leaves to California.

Our screen does not answer it. It counts California outside rather than assume its way past the question, which is the reading our FLASH AWD 1.0 review applied to the same header. Our California page covers what the state has said so far.

The label the section requires at (c) is a 9-point sticker, which is not something a product photograph resolves; we confirm it on the unit we ship you.

The engine's answer, and what it rests on. Asked on 5 September 2026 whether the FLASH LITE 2.0 is street legal, the AI-search instrument in our panel answered from the Australian market's 250 W FLASH Lite 1.0 page and six retailer listings, cited no statute, and closed with "contact Eunorau directly". Asked whether a 20 mph electric moped with pedals needs a license, it answered "almost always" no from brand blogs, with one California Highway Patrol page and no statute. The statute is above, and it is short; the panel's raw output is in the source register.

What to do. Leave the setting where it ships. Look your state up in our state-by-state law table, read its speed line and its throttle line, and if you plan to raise the limit, ask the agency that wrote the definition what the bike becomes when you do. In the states our table names, the answer is a moped or motorized-bicycle class with its own license and registration rules, which our electric mopeds guide walks through.

Takeaway

  • 26 of 51 accept it at 750 W and 20 mph; 22 do not, on the word "less" in twenty-one statutes. Read your own state's line rather than a class number.
  • "Unlockable" is a legal event. Raise the limit and the bike sits outside all 48 definitions our table could read.
  • California's § 312.5(d)(1) reaches maker-modifiable limits. Ask before you buy for California roads.

A hardtail on 20-inch fat tires

The FLASH LITE 2.0 has a suspension fork and no rear suspension, and Eunorau says so in two places. The specification row reads "Rear Shock: Rear Drive: None"; the feed reads "SUSPENSION: Hard Tail". The fork is an "EXSHO STRONG-DH 80mm Travel Fork", which the page copy describes as carrying "compression adjustment and lockout".

Eunorau answers the comfort question itself, in its FAQ. The LITE 2.0 "is a hardtail; cushioning mainly comes from the 80mm-travel front fork and the fat tires themselves, plus an extended saddle. That's plenty for everyday city riding and light bumps. If you regularly ride on gravel or rougher trails, consider the fully-suspended FLASH 2.0 instead."

What we can add is the number. A 20×4.0 tire at low pressure is a large air spring in its own right, which is the reason fat-tire hardtails exist as a category, and the bench saddle is the third element the maker names.

The history facet is the sibling. The step-through FLASH LITE ST publishes a 60 mm fork; the LITE 2.0 publishes 80 mm. Same price, same motor, twenty millimeters more travel on the step-over, and the ST's lower standover in exchange. Eunorau publishes no spring rate, no damping figure and no rider-weight setting for the fork on either trim, so "compression adjustment and lockout" is the whole of what a buyer can check.

The contested facet is the product page's own tags. The feed for this handle carries the tag "Full-suspension" alongside "Hard Tail" in its specification text. The specification governs; the tag is a catalog label three of the four FLASH bikes carry, and we note it so a buyer who filters Eunorau's site by suspension type understands why the LITE appears where it does.

Front fork of the Eunorau FLASH LITE 2.0: the EXSHO STRONG-DH fork with 80 mm of travel, the front 180 mm rotor and hydraulic caliper

The EXSHO fork, with the front rotor and caliper behind it. Eunorau publishes 80 mm of travel, compression adjustment and a lockout; it publishes no spring rate.

Brakes, the two-up saddle and 440 pounds

Hydraulic discs with 180 mm rotors at both ends, and levers that cut the motor, on a bike rated to carry 440 lb. Those are the three brake rows Eunorau publishes: "Hydraulic Disc Brakes", "Eunorau 180mm Front and Rear", and "Eunorau Brake Lever with Motor Cutoff Switch". The page copy adds that the 180 mm set is "sensitive, but provide efficient and ample force when braking".

What the maker does not publish for this trim is the piston count. The LITE ST's page specifies four-piston calipers; the LITE 2.0's does not say, and we do not carry the sibling's figure across. If the caliper matters to you, it is a one-line question to put to Eunorau, and it is on our list in the ordering section.

The saddle is the reason the payload figure is on this page. Eunorau calls it a "Two-Person Plush Saddle" that "can accommodate a single rider or have a companion for a laidback cruise", and its page adds: "with the 52V750W motor, the extra weight of a passenger is no problem." The published total payload is 440 lb, and the bike itself is 82 to 92 lb.

Eunorau publishes no separate passenger rating, no seat-length figure and no statement of whether 440 lb includes the machine. Two adults and a bike can reach 440 lb quickly, and whether your state allows a passenger on a Class 2 e-bike at all is a state question. Our state law table is where to look it up.

Enforcement, in this section's reading, is the federal brake test. 16 CFR § 1512.18 sets the braking requirements for bicycles sold in the United States, and § 2085(a) extends them to low-speed electric bicycles as § 2085(b) defines them — a motor "of less than 750 watts" reaching "less than 20 mph" on motor power alone. Eunorau publishes 750 W and 20 mph, both sitting on the line rather than under it, and how the Commission reads a figure at the boundary is not something a specification answers. The maker publishes no stopping distance and we measured none.

Rear brake of the Eunorau FLASH LITE 2.0: the 180 mm rotor and hydraulic caliper beside the rear hub motor, with the kickstand behind

Rear rotor and caliper beside the hub motor. Eunorau publishes the rotor size and the lever cutoff; it does not publish the piston count for this trim.

Weight, fit and the geometry Eunorau publishes

Eunorau publishes a rider-height range of 5'2" to 6'4", a bike weight of 82 to 92 lb, and seven frame measurements. The geometry table reads: head tube 160 mm (6.3 in); reach 280 mm (11 in); seat height 840 mm (33.1 in); standover 780 mm (30.7 in); wheelbase 1,090 mm (43 in); total length 1,740 mm (68.5 in).

A seventh row, handlebar height, reads "108mm/42.5in" on the same table. Forty-two and a half inches is 1,080 mm, so the two figures on that row do not agree, and we quote both and use neither.

The standover is the number to read first. At 30.7 inches, the LITE 2.0's top tube sits where a moped frame's top tube sits, and the published range starts at 5'2". Eunorau's own step-through, the FLASH LITE ST, publishes a 17.5-inch standover and a range that starts at 4'8", for the same $1,899 and the same motor. A rider near the bottom of the LITE 2.0's range, or anyone who wants a foot flat on the ground at every stop, has a same-price answer on the same platform.

The seat height is a single figure. Eunorau publishes 33.1 inches and a saddle row that reads "JUSTGK Saddle"; there is no seatpost length, no adjustment range and no minimum figure. A bench saddle over a rack battery is a fixed platform, and the published range of 5'2" to 6'4" is Eunorau's statement of who it fits. Get the standover checked against your inseam before ordering if you are within two inches of either end of that range; we will do the arithmetic with you by email.

The weight range is a platform figure. 82 to 92 lb is the same span Eunorau prints for the FLASH 2.0 and the AWD, so the maker is not claiming a LITE-specific saving. The ten-pound spread most likely reflects battery configuration, though Eunorau does not say so, and that reading is ours.

Either way this is a bike you roll rather than carry. A car rack rated under 90 lb per bike, an apartment staircase, or a bus rack with a weight limit are all worth checking against the published weight before the order.

Pedaling it without the motor is a gear question. Eunorau's drivetrain rows read "Single Speed" and "Cassette 44T / 36T" with a 170 mm crank. Read literally, a 44-tooth chainring driving a 36-tooth sprocket on a 20-inch wheel is about 25 gear-inches, which puts a comfortable 90 rpm cadence at roughly 7 mph; above that the pedals are along for the ride.

Our reading of Eunorau's photographs is that the rear sprocket is smaller than 36 teeth, which would raise that figure, but a photograph is not a specification and we do not publish a tooth count we have not been given. The tooth count is on the list of questions for the maker below.

What is certain from the published rows is that this is a throttle-and-assist machine first. A rider who wants to contribute real leg power at 20 mph should look at the eight-speed FLASH 2.0.

Close crop of the Eunorau FLASH LITE 2.0 rear hub: the single sprocket and the spring-arm chain tensioner behind the FLASH LITE decal

The single sprocket and the tensioner arm behind it, cropped from Eunorau's studio frame. The tooth count is what the maker's "44T / 36T" row is about, and it is the one figure in this section we could not confirm from the page.

Side profile of the Eunorau FLASH LITE 2.0 in Lunar Dust, left side, showing the fixed bench saddle, the step-over top tube and the 20-inch wheels

Lunar Dust, non-drive side. The bench sits at a published 33.1 inches and the top tube at 30.7. There is no seatpost to raise or lower.

The Mercer fit test

The Mercers are our editorial cast, the fixed measuring stick we hold every bike against; meet them here. Each verdict below reads only Eunorau's published numbers or an age rule from our law pages. Nobody in this family has ridden the bike.

Member Verdict The number behind it
Frank Kowalski, 63, 5'10" Fits the published range; the 30.7-inch standover is the question 5'10" sits mid-range in Eunorau's 5'2"–6'4"; standover 30.7 in with a fixed 33.1-in bench. Frank should read the LITE ST first: same price, 17.5-in standover.
Ruth Kowalski, 61, 5'5" Inside the range, near its lower third; standover in writing first 5'5" is three inches above Eunorau's 5'2" floor. With no seat adjustment published, the 30.7-in standover is the figure to check against her inseam before ordering.
Jack Mercer, 48, 6'1" Fits; the bench, the 440 lb rating and the fat tires are his use case 6'1" is inside 5'2"–6'4"; 440 lb total payload; 20×4.0 tires. The AWD is the trim if his surfaces are loose.
Dana Mercer, 45, 5'7" Fits; the passenger bench is the cargo case, with a state question attached 5'7" is mid-range; the "Two-Person" saddle and 440 lb rating are published; whether a passenger is allowed on a Class 2 e-bike is set by her state.
Maya Torres, 32, 5'6" Fits; the LITE is the trim Eunorau's own FAQ writes for her commute 5'6" is inside the range; "tight budget, mostly city commuting on decent roads" is the maker's routing. Her cost is the 8-hour charge unless she adds the $79 4 A unit.
Cole Mercer, 16, 5'11" Fits the frame; the setting stays at 20 mph, and his state decides the rest 5'11" is inside the range. As shipped it is a 750 W, 20 mph throttle machine, which 26 of 51 definitions accept as an e-bike and 22 do not; that answer, and any age line, are in our law table. The "unlockable" setting is off the table for him.
Ivy Mercer, 12 No Ivy is 12, and no rider height is published for her. On age the states split — a few set a floor for every class, most only for Class 3, many none at all — so our law table is where her state's answer lives. A 92 N·m throttle machine is off the table at her age either way. Her row is here so the family knows where both lines are.

The sharpest contrast in this family is Frank and Maya. The LITE 2.0 is written for Maya's commute in the maker's own words, and every published number fits her. Frank fits the same numbers and should still buy the other one.

The step-through ST costs the same, carries the same motor, and takes thirteen inches off the top tube he has to clear at every stop, on Eunorau's published geometry. Same platform, same price, two different answers, and the frame is the reason.

Not sure which FLASH? Send support@redtailebikes.com your height, your surface and your daily miles. If the honest answer is the ST, the AWD, the FLASH 2.0 or nothing on our shelf, that is the answer you will get.

Compare every Eunorau we stock

Has it been recalled?

No recall of the Eunorau FLASH LITE 2.0, or of any Eunorau product, appeared in the Consumer Product Safety Commission's recall database on 5 September 2026. We queried the CPSC recall API for the brand name and re-ran the query at the public recall search; both returned zero rows naming the brand.

Before trusting that zero, we ran the same instrument against a brand with a known recall. It returned Ride Aventon's recall 24075 of January 2024, so the tool sees recalls when they exist.

The CPSC's separate warnings index could only be read in part: ten notices were enumerated and none named Eunorau. Ten notices out of a paged index is a sample, and we record it as one. A zero from the recall database is a statement about that database on that date, and the warnings half of the search is unfinished.

Is it UL certified?

Eunorau states that it is, and publishes no certificate. The LITE 2.0's page header reads "UL CERTIFIED: Yes". The maker's announcement of 5 March 2023 states that "all of our ebikes have passed the UL 2849 testing" and that "Our ebike batteries have also passed the UL 2271 tests".

Neither the product page nor the announcement gives a certificate number, a file number, a testing laboratory or a date of issue for this model.

The two standards are different things. UL 2849 is the standard for the complete electrical system of an e-bike: battery, charger and drive together. UL 2271 covers the battery pack alone.

Eunorau's announcement names both, and the LITE 2.0's product record dates from November 2025, two and a half years after it. The announcement predates the trim, and "all of our ebikes" is the maker's own scope statement.

Where the certificate matters is where someone else asks for it: a landlord, an insurer, a workplace charging policy, or a city that conditions sale or indoor charging on a listing. If you need the document, ask before you order and we will request it from Eunorau in writing; what we will not do is describe a certificate we have not seen.

The charger sold separately is the same maker's unit for the same pack. Eunorau's warranty page excludes damage from "a battery charger that is not intended or compatible", which is one more reason to buy the 4 A unit from Eunorau's own range if you buy one at all.

Warranty, returns, and what changes when we sell it

Ask an AI engine about Eunorau's warranty and you are usually quoted terms that stopped applying to new bikes in August 2023. Our Eunorau brand profile shows the two documents side by side and dates them.

Ten years on the frame; 24 months on the battery, the motor and the electrical components. Those are the terms of Eunorau's 24-Month+ Limited Warranty for bikes "bought in the U.S. … on or after August 1st, 2023", and our listing reproduces them. We read both on 5 September 2026 and they agreed line for line.

Four conditions on that page decide whether a claim is honored. Registration "right after the purchase". An "E-bike check-up by a Eunorau specialist or dealer after the first year of use". The warranty "does not transfer to another owner".

A bike "purchased by a business for commercial use" gets a term cut by half, per the same page. The uncovered list names "Labor charges for part replacement or changeover", tires and tubes, chains and chain rings, brake pads and rotors, and "Any free gift or accessories that came with the purchase of the product".

The clause a dealer's customer should know is the fifth requirement on Eunorau's page: "When purchasing Eunorau ebikes from an authorized Dealer, kindly ensure that the dealer guides you through the registration process for your new ebike." On a bike bought here that walk-through is our job, and the ordering section says how we do it.

Eunorau also writes on that page that after the warranty it "may only ask for shipping costs and send replacement parts for free" as "a manufacturer courtesy", and reserves the right to change that. It is a courtesy, and we quote it as one.

Returns differ by who sold you the bike. Eunorau's direct return policy gives seven calendar days from receipt for a product "in 100% new, Re-sellable condition", with the customer paying return freight, and a shipping-cost deduction from the refund where "the reasons attributable to the Customer" apply.

Our refund policy is the one that applies to a bike bought from us: change-of-mind returns on an unopened, factory-sealed box only, requested within 72 hours of delivery, with a 15% restocking fee and return shipping. Damage or defects reported with photographs within 48 hours are ours to resolve at no cost.

Once the box is open, the return window is closed on both policies, so every question on the checklist is a question to ask while the crate is still sealed.

The older warranty page is still live. Eunorau's superseded terms list a five-year frame and twelve months on the motor; they govern bikes bought before 1 August 2023 and not this one. We cite them so a reader who finds that page first knows which one applies.

Ordering, shipping and support

Question Answer, with the document behind it
What does it cost, and where? $1,899 on our store and $1,899 on Eunorau's, both read 5 September 2026. What buying here adds is a dealer who runs the warranty claim and the registration, free freight to the lower 48, stock on hand, and monthly payments at checkout.
Is it in stock? Both colorways were orderable on 5 September 2026, with 25 recorded against each in our own inventory record. Shopify is not tracking units on this product, so treat those as our recorded figures rather than a live warehouse count — we confirm the actual unit before we take your money.
How does it ship? Free to the contiguous US under our shipping policy: dispatched in 1–3 business days, most e-bikes arriving 5–10 business days later by parcel or LTL freight, with a signature possible. Eunorau's own policy ships e-bikes free "to the lower 48 States" and charges "+500USD" to Alaska and Hawaii; bought from us, contact us before ordering to either.
Which charger arrives? Eunorau's page says a 2.0 A unit. Tell us at order time if you want the maker's 4 A FLASH charger sourced with the bike; it is a $79 item on Eunorau's site and not in our inventory on 5 September 2026.
Which top speed ships? Eunorau's page says 20 mph and its feed says 28; see the speed section. Ask before you order and we confirm the setting on the unit we ship you, in writing.
Can I get the extra batteries here? Not from our inventory on 5 September 2026. Eunorau lists the 21 Ah at $699 and the 17 Ah at $599; tell us which bay you want filled and we will say where that pack is in stock that week.
What is left to assemble? Eunorau's page does not say how much of the bike arrives built; the feed says a manual and tools are in the box. Ask us in writing while the crate is sealed.
Who services it? A warranty claim on a bike bought here is our job to run, and we walk you through Eunorau's registration at delivery. Brakes, tires and the single-speed chain are work any bike shop does; the hub motor, controller and display go back through us.
Can I pay monthly? Yes, Shop Pay installments at checkout, shown on our listing under the price.
What we are asking Eunorau, for you The shipped top speed and how the feed's 28 mph relates to it; the rear sprocket's tooth count; the caliper's piston count; the fork's spring and damping figures; a passenger rating and whether footpegs are fitted for a passenger; the charge time the maker measures on the 2 A unit, and whether the 4 A unit charges one installed pack or all of them; and a copy of the UL 2849 documentation for this trim. These questions go to Eunorau in writing, and the answers go on this page in its own words; if we get none, this page will say so and give the date we asked.
Still deciding? Write to support@redtailebikes.com with your inseam, the surface you ride most and the miles you cover in a week. You get back a one-line answer the same business day: the LITE 2.0 fits, the ST or the AWD or the FLASH 2.0 fits better, or none of ours does.
What this page does not promise A ride impression, a measured charge time, a certificate we have seen, or a recall search beyond the one named above.

The honest ledger

We sell this bike. Read the red flags as carefully as the green.

Green flags

  • The cheapest door into a three-bay platform. Same frame, same 440 lb rating, same bays as the $2,499 trim, for $1,899. Each add-on pack is $0.64 to $0.68 per watt-hour against $2.28 for the bike as shipped.
  • Twenty-six jurisdictions accept it as shipped, at 750 W and 20 mph with a throttle, on each statute's own wording — including Texas-sized markets like Michigan, North Carolina, Virginia and Washington.
  • Hydraulic discs with 180 mm rotors and cutoff levers, published, on a bike rated to carry 440 lb.
  • A published rider-height range and seven geometry figures, which is more fit data than most moped-style bikes carry.
  • Ten years on the frame, 24 months on the electrics, in writing, with the dealer clause that puts registration on us.
  • LG cells named on the battery's own page, with a cycle-life figure ("500–800 times") the pack's page publishes.
  • Zero recall rows at the CPSC on 5 September 2026, from an instrument we validated on a known recall the same day.

Red flags

  • The 2 A charger. Eight hours to fill the shipped pack at 100% efficiency, 27 hours for three packs. The $79 4 A unit halves both, and it is not in the box.
  • Two top speeds in the maker's own documents. 20 mph on the page, 28 in the feed, "Unlockable" on the header. The bike is a different vehicle under every definition depending on which figure describes the unit as shipped.
  • Single speed with a published 44T/36T pairing. Read literally, pedaling stops contributing at about 7 mph; if the sprocket is smaller than published, that changes, and the tooth count is one of the questions on our list to the maker.
  • A fixed 33.1-inch bench and a 30.7-inch standover with no adjustment published. The step-through ST solves this at the same price.
  • No certificate published behind "UL CERTIFIED: Yes"; no charge time; no piston count; no passenger rating; no assist-sensor type; a handlebar-height row whose two units disagree.
  • 82 to 92 lb. The platform's weight, not a LITE saving.

Who should buy it

Buy it if you want the FLASH platform for its range architecture and its bench, you ride paved or well-kept surfaces, your climbs are the kind a 92 N·m hub handles without a gear change, and you will spend the $600 you saved on a second pack and the $79 charger.

At that point you own a 135-mile bike for $2,677 whose shipped pack fills in four hours instead of eight, and nothing else Eunorau makes gets you there cheaper. Order the FLASH LITE 2.0.

Buy something else if any of these describes you:

  • You need a foot flat on the ground at every stop, or you are near 5'2". The FLASH LITE ST is the same $1,899 with a 17.5-inch standover.
  • Your surfaces are loose. The FLASH AWD 1.0 puts a second 750 W hub in the front wheel for $200 more, with its own legal question attached.
  • You want to pedal at 20 mph, or you ride rough ground. The FLASH 2.0 has eight gears, a 220 N·m mid-drive and a rear shock for $2,499.
  • You want a 52V moped frame from a different maker. Our Eahora Romeo II review covers a heavier, faster machine that ships in a different class; its review covers what that means in your state.
  • You want a bike you can carry. Nothing on the FLASH platform weighs under 82 lb; our folding e-bikes are where the frames you can lift live.

Every one of those is a bike we sell, and the email in the ordering section will route you to the right one, including the case where the right one is none of them. The whole shelf is at all e-bikes.

Eunorau FLASH LITE 2.0 in Lunar Dust stopped at a waterfront railing, rider standing over the frame

Stopped at a waterfront, one foot down. Eunorau's frame shows the standover the numbers describe: a 30.7-inch top tube under a rider the maker's range puts near its middle.

Both colorways orderable on 5 September 2026. Free shipping to the lower 48, Shop Pay installments at checkout, and the warranty registration done with us at delivery. Add the second pack and the 4 A charger on the same order and tell us which bay.

Buy the FLASH LITE 2.0 — $1,899

Before you buy: the checklist

Ask these while the crate is still sealed, because the return window closes when it opens.

  1. Which top speed is set on the unit being shipped, in writing: 20 mph or the feed's 28.
  2. Which charger is in the box, and whether the 4 A FLASH charger is available to ship with it.
  3. Your state's speed and throttle lines, from our law table, and whether a passenger is permitted on a Class 2 e-bike where you ride.
  4. Your inseam against a 30.7-inch standover, if you are within two inches of either end of 5'2"–6'4".
  5. Where 82 to 92 lb has to go: car rack rating, stairs, bus rack limit.
  6. Which batteries you will actually buy, priced: $699 for the 21 Ah, $599 for the 17 Ah, and the bays they fit.
  7. The registration step, done with us at delivery, and the first-year check-up the warranty requires.
  8. Your own Wh/mi: 832 ÷ 20 or ÷ 25 is the range to plan a week around; 12.8 is the maker's.
  9. The UL document, if a landlord, insurer or employer will ask for it: request it before, not after.
  10. What Eunorau publishes as "not published": charge time, piston count, sensor type, passenger rating. Ask us; the same questions are going to the maker.

Limitations of this review

  1. We sell this bike. Every statement is the maker's published specification, confirmed at its page and recomputed.
  2. The charge-time figures are floors computed from two published rows (amp-hours and charger amps) at 100% efficiency with no taper. Real times are longer. Eunorau publishes no measured charge time for this trim; its LITE ST page's "8–10 hours" is quoted for the same pack and charger.
  3. The charger census reads charger rows only. Of Eunorau's 34 catalog pages read on 5 September 2026, 15 publish no charger row and are recorded as unpublished, never as 2 A.
  4. The jurisdiction screens report where published figures sit against definitions. They are not legal advice, they were run on 750 W and 20 mph (page) and 750 W and 28 mph (feed), and they say nothing about local ordinances, trail rules or a passenger. Each row applies its own statute's boundary word, so a motor rated at exactly 750 watts counts as outside a definition written "less than 750 watts"; Hawaii's publisher could not be reached on 5 September 2026 and is recorded as not read in both screens.
  5. California is counted outside on § 312.5(d)(1), because the maker publishes the limit as raisable and the subsection removes a modifiable vehicle from the definition. Whether that clause reaches this bike is California's question; the screen records the doubt rather than assuming past it.
  6. The drivetrain arithmetic (about 25 gear-inches, about 7 mph at 90 rpm) reads Eunorau's "44T / 36T" literally. Our photograph reading that the sprocket is smaller is an inference and is labelled as one; it moves no number on this page.
  7. The recall search is complete for the recall database and partial for the warnings index, which is paged and could only be enumerated to ten notices.
  8. The UL statement is Eunorau's, from a March 2023 announcement that predates this trim; no certificate has been seen.
  9. Electricity costs use the EIA's June 2026 state averages and the shipped 832 Wh pack; your rate and charger losses change the figure.
  10. The stock figures are our own recorded numbers, not a tracked count. Shopify's inventory tracking is switched off on this product, so the 25 against each colorway is what our record holds rather than a live warehouse tally; we confirm the unit before taking payment.
  11. The reviews panel on Eunorau's page aggregates the FLASH family and is not used as evidence about this trim.
  12. The comparison table quotes Eunorau's page for each trim on 5 September 2026. Eunorau's own listing and feed disagree on this bike's top speed; where a sibling's page and feed disagree, the page is quoted.
  13. Owner comments quoted from Reddit are leads, attributed as such, and move no figure.
  14. California's § 312.5 was read from an Internet Archive capture taken the morning of 5 September 2026, after the legislature's site timed out on two direct attempts.
  15. Eunorau has not yet answered the questions on this page. The list in the ordering section is going to the maker in writing; this page will carry the answers in Eunorau's words, or the date we asked and heard nothing.

Expiry conditions. This page ages when Eunorau changes the shipped charger, the top-speed rows, the battery prices or the warranty terms; when the CPSC publishes any Eunorau action; when California or any state amends its definition (North Carolina's three-class switch takes effect 1 December 2026); and when the EIA publishes its next monthly table. Re-verification is due by 5 March 2027 at the latest.

The source register

Source Tier What it supports Accessed
Eunorau, FLASH LITE 2.0 product page (rendered) T2 Every specification row; the 20 mph figure; the FAQ quotations; geometry; the reviews panel 2026-09-05
Eunorau, FLASH LITE 2.0 product feed (products.json) T2 The 28 mph figure; "Hard Tail"; the "Full-suspension" tag; the record's creation date 2026-09-05
Eunorau, 52V4A FLASH charger page T2 58.8 V, 4 A, $79, FLASH-only compatibility 2026-09-05
Eunorau, 52V16Ah main battery page T2 LG cells; "Standard Charge 4A"; cycle life 500–800 2026-09-05
Eunorau, 21 Ah and 17 Ah battery pages T2 Add-on pack prices and capacities 2026-09-05
Eunorau, FLASH LITE ST, FLASH 2.0 and FLASH AWD 1.0 product pages T2 Sibling rows in the comparison tables; the ST's 8–10 h charge answer 2026-09-05
Eunorau, warranty (current and superseded), shipping and return pages T2 Warranty terms and conditions; freight; return windows 2026-09-05
Eunorau, "We are UL 2849 tested and UL 2271 tested" (5 March 2023) T2 The maker's UL statement 2026-09-05
Eunorau, US catalog (34 product pages) T2 The charger census 2026-09-05
15 U.S.C. § 2085 T1 Federal definition; applicability of 16 CFR part 1512 2026-09-05
Cal. Veh. Code § 312.5 T1 Definition, label requirement, modifiable-limit exclusion 2026-09-05 (Internet Archive capture of that morning)
16 CFR § 1512.18 T1 Federal braking requirements 2026-09-05
36 CFR § 1.4 T1 National Park Service definition 2026-09-05
51-jurisdiction rule table, first party T1 sources compiled Both screens; each row carries its section 2026-09-05
U.S. Consumer Product Safety Commission recall database; recall 24075 (control) T1 Recall status and instrument validation 2026-09-05
U.S. Energy Information Administration, Electric Power Monthly Table 5.6.A T1 Residential electricity prices, June 2026 2026-09-05
UL Standards & Engagement, UL 2849 and UL 2271 T3 What each standard covers 2026-09-05
Electrek, launch report of 13 April 2023 T4 Launch price of the base configuration, history only 2026-09-05
Reddit r/ebikes comment via an archive T4 An attributed rider remark on charger amperage; a lead only 2026-09-05
Redtail eBikes listing, shipping and refund policies T2, first party Our price, stock, terms 2026-09-05
Charger census dataset and jurisdiction screens First party Computed figures, saved and re-runnable 2026-09-05

T5 sources — aggregators, retailer blogs, AI summaries — were read as leads and cited nowhere.

Frequently asked questions

Is the Eunorau FLASH LITE 2.0 worth it?

It is worth it for a rider who wants the FLASH platform's three battery bays, bench and 440 lb rating on paved roads and will put the $600 saved over the mid-drive into a second pack and Eunorau's $79 4 A charger. It is not worth it for a rider who needs gears on climbs, rear suspension, or a low standover; the same money buys the step-through LITE ST.

How fast does the Eunorau FLASH LITE 2.0 go?

Eunorau's product page publishes 20 mph and its header reads "Class 2 · Speed limited · Unlockable". Its product feed for the same bike publishes 28 mph. Plan around 20, which is the maker's statement of what ships, and ask before changing the setting: at 28 mph with a throttle the bike sits outside all 48 definitions our table could read.

At 750 W and 20 mph with a throttle, its published figures sit inside the e-bike definition of 26 US jurisdictions and outside 22. Twenty-one statutes define the motor as "less than 750 watts", and a 750-watt motor is not less than 750. Alaska and Kentucky publish no definition, and Hawaii could not be read.

That is a screen of published numbers against statutes; it is no substitute for legal advice. Your state's speed and throttle lines are in our law table, and California's § 312.5(d)(1) asks a separate question about maker-modifiable limits.

Do I need a license or registration for the FLASH LITE 2.0?

In most states a machine inside the e-bike definition rides under bicycle rules, with no license and no registration. Not everywhere: New Jersey registers e-bikes and licenses the rider, and its own definition reads a throttle-equipped bike as a motorized bicycle that must also be insured.

Your state's license, registration, age and helmet lines are in our law table. Raise the limit to 28 mph with the throttle active and the bike leaves all 48 definitions our table could read; where a statute says what it becomes, that is a moped or motorized-bicycle class with rules of its own.

How long does the FLASH LITE 2.0 take to charge?

Eunorau publishes no charge time for this trim. Its spec sheet lists a 2.0 A charger and a 16 Ah pack, which is 8.0 hours at 100% efficiency with no taper, and its LITE ST page says "approximately 8–10 hours" for the same pack and charger. Eunorau's own 4 A FLASH charger, $79, brings the floor to 4.0 hours, and the battery's page lists 4 A as the pack's standard charge.

Are most e-bike chargers 2 amps?

Across Eunorau's own catalog, yes: 16 of the 19 product pages that publish a charger list a 2.0 A unit, read from the maker's storefront on 5 September 2026. The two FLASH trims above the LITE ship 4 A units. A 2 A charger is gentler on cells and slower; the trade is time.

Can the battery be removed for charging?

Eunorau's LITE 2.0 page does not say. Its page for the FLASH LITE ST, which ships the same 52V 16Ah rack pack, answers the same question: "Yes. The battery can be removed and charged indoors, or charged while installed on the bike." The maker sells each FLASH pack as a separate product; the release mechanism is not published for either trim.

How much does it cost to charge the FLASH LITE 2.0?

About 15 cents for a full charge of the 832 Wh pack at the EIA's June 2026 national residential average of 18.34 cents per kilowatt-hour, before charger losses; about 29 cents in California and 13 in Texas at those states' averages. All three packs together are under 60 cents at the national figure.

Can it really go 220 miles?

Only with all three packs (2,808 Wh) at the lowest assist level, which is the condition Eunorau's own FAQ attaches to the figure. The claim assumes 12.8 Wh per mile, the same assumption behind the 65-mile single-pack figure. At 20 Wh/mi the three packs give about 140 miles and the shipped pack about 42.

Are all three batteries included?

No. Only the 52V 16Ah main pack is standard. The 21 Ah top-tube pack is $699 and the 17 Ah down-tube pack is $599 on Eunorau's site on 5 September 2026, and Eunorau's FAQ advises buying them "based on your actual riding range" because they add weight.

Is a single-speed e-bike OK for hills?

On a hub-motor bike the motor's pull does not depend on the gear, so the single speed limits your legs and leaves the motor alone. The LITE 2.0 publishes 92 N·m; a hub motor at that torque handles moderate grades, which is how Eunorau's FAQ describes it. For steep or long climbs, or if you want to add real pedal power, the eight-speed, 220 N·m FLASH 2.0 is the trim.

Why does the FLASH LITE 2.0 use a single-speed drivetrain?

Eunorau describes it as "a simpler single-speed drivetrain" paired with the rear hub to land the trim "in a more affordable, more accessible spot", on its product page. Read literally, the published 44T/36T pairing puts a 90 rpm cadence at about 7 mph, so the pedals do little at speed; the maker has not confirmed the sprocket size, and that question is on our list to Eunorau.

No rear suspension: will the FLASH LITE 2.0 be comfortable?

Eunorau's answer is that cushioning "mainly comes from the 80mm-travel front fork and the fat tires themselves, plus an extended saddle", which it describes as enough "for everyday city riding and light bumps", and it routes gravel and rough-trail riders to the FLASH 2.0. The numbers are an 80 mm fork with compression adjustment and lockout, and 20×4.0 tires.

How much does the Eunorau FLASH LITE 2.0 weigh?

Eunorau publishes 82 to 92 lb, the same span it prints for the FLASH 2.0 and the AWD. Its published total payload is 440 lb, with no separate passenger rating.

What is the difference between the FLASH LITE 2.0 and the FLASH LITE ST?

Same price, same 52V 750 W rear hub, same 16 Ah pack. The LITE 2.0 is a step-over frame with a 30.7-inch standover, an 80 mm fork and a 5'2"–6'4" range; the LITE ST is a step-through with a 17.5-inch standover, a 60 mm fork and a range starting at 4'8". Our LITE ST review covers it.

Is Eunorau a good brand? Where are Eunorau bikes made?

Eunorau's warranty page describes the issuer as "Eunorau Bikes, a Nevada corporation" at 3111 S. Valley View Blvd, Las Vegas; the site's copyright line names Eunorau E-Mobility USA Corp., and e-bikes ship from Las Vegas per its shipping page.

Its warranty is ten years on the frame and 24 months on the electrics; its CPSC recall record was zero on 5 September 2026. A brand profile covering all twelve Eunorau bikes we have reviewed is in preparation; until then, the reviews hub indexes every one.

Is the FLASH LITE 2.0 an electric moped with pedals?

It is a moped-styled electric bicycle in shape: a bench saddle and a moto frame on a machine with fully operable pedals, a 750 W motor and a 20 mph limit as shipped. Whether a given state's definition reaches a motor rated at exactly 750 watts is the question above — 26 say yes, 22 say no.

What it is called on the road depends on the setting and the state. Our electric mopeds guide explains where the line falls.

Does it come with a warranty when I buy it from Redtail?

Yes. Eunorau's 24-Month+ Limited Warranty covers bikes "bought in the U.S. … on or after August 1st, 2023" from the maker or an authorized dealer: ten years on the frame, 24 months on the battery, motor and electrical components, with registration and a first-year check-up required. We run the registration with you at delivery and handle the claim if one arises.

The bottom line

The FLASH LITE 2.0 is the least expensive way to own Eunorau's three-bay, 440 lb moped frame, and every number the maker publishes supports the way it is sold: a city bike for paved roads with a range architecture that grows by the pack.

As shipped it is a 750 W, 20 mph throttle machine that 26 of 51 US definitions accept and 22 exclude on a single word, riding on hydraulic 180 mm discs, with ten years on the frame.

Two costs come with the discount and both are fixable with money. The 2 A charger puts an eight-hour floor under every full charge; Eunorau's own 4 A unit is $79 and halves it. The single-speed drivetrain leaves the motor to do the work above walking pace; the eight-speed FLASH 2.0 exists for the rider who wants otherwise.

One cost is fixable only by choosing a different frame: a 30.7-inch standover and a fixed bench, which the same-price LITE ST removes. Buy it if the platform is what you want and the road is paved. Buy the ST if the standover is the problem, the AWD if the surface is, and the FLASH 2.0 if the hill is.

Whichever it is, order it here with free shipping to the lower 48, or email support@redtailebikes.com and we will tell you straight, including when the answer is a different bike.

The cheapest door into the FLASH platform, orderable in both colors on 5 September 2026. Free shipping to the lower 48, the registration done with us at delivery, and the 4 A charger and second pack sourced on the same order if you ask.

Order the FLASH LITE 2.0 — $1,899

Primary sources

  1. Eunorau E-Mobility USA Corp. "FLASH LITE 2.0" product page: specification table, geometry, FAQ, page header. Retrieved 2026-09-05. https://eunorau-ebike.com/products/flash-lite-2-0 · Archive: https://web.archive.org/web/20260905225000/https://eunorau-ebike.com/products/flash-lite-2-0
  2. Eunorau E-Mobility USA Corp. FLASH LITE 2.0 product feed (products.json), handle flash-lite-2-0: "MAXIMUM SPEED: 28 MPH", "SUSPENSION: Hard Tail", tags, created_at 2025-11-20. Retrieved 2026-09-05. https://eunorau-ebike.com/products/flash-lite-2-0.json · Archive: https://web.archive.org/web/20260905225020/https://eunorau-ebike.com/products/flash-lite-2-0.json
  3. Eunorau E-Mobility USA Corp. "EUNORAU 52V4A 1.0 US/CA FLASH Ebike Charger": 58.8 V output, 4 A, $79. Retrieved 2026-09-05. https://eunorau-ebike.com/products/eunorau-flash-52v4a-electric-bike-quick-charge-charger · Archive: https://web.archive.org/web/20260905225853/https://eunorau-ebike.com/products/eunorau-flash-52v4a-electric-bike-quick-charge-charger
  4. Eunorau E-Mobility USA Corp. "EUNORAU 52V16Ah Main Battery for FLASH Ebike": LG cells, "Standard Charge 4A", cycle life 500–800, $599. Retrieved 2026-09-05. https://eunorau-ebike.com/products/eunorau-52v16ah-main-battery-for-flash-ebike · Archive: https://web.archive.org/web/20260905225921/https://eunorau-ebike.com/products/eunorau-52v16ah-main-battery-for-flash-ebike
  5. Eunorau E-Mobility USA Corp. "EUNORAU 52V21Ah Secondary Battery for FLASH Ebike", $699. Retrieved 2026-09-05. https://eunorau-ebike.com/products/eunorau-52v21ah-secondary-battery-for-flash-ebike · Archive: https://web.archive.org/web/20260905060823/https://eunorau-ebike.com/products/eunorau-52v21ah-secondary-battery-for-flash-ebike
  6. Eunorau E-Mobility USA Corp. "EUNORAU 52V17Ah Third Battery for FLASH Ebike", $599. Retrieved 2026-09-05. https://eunorau-ebike.com/products/eunorau-flash-third-52v17ah-battery · Archive: https://web.archive.org/web/20260905060841/https://eunorau-ebike.com/products/eunorau-flash-third-52v17ah-battery
  7. Eunorau E-Mobility USA Corp. "FLASH LITE ST 1.0" product page: 60 mm fork, four-piston calipers, 17.5-inch standover, 4'8"–6'4", "approximately 8–10 hours" on the 2A charger. Retrieved 2026-09-05. https://eunorau-ebike.com/products/flash-lite-st · Archive: https://web.archive.org/web/20260905230604/https://eunorau-ebike.com/products/flash-lite-st
  8. Eunorau E-Mobility USA Corp. "FLASH 2.0" product page: 1000 W Truckrun mid-drive, 220 N·m, 8-speed, 4.0 A charger, $2,499. Retrieved 2026-09-05. https://eunorau-ebike.com/products/flash-2 · Archive: https://web.archive.org/web/20260905230629/https://eunorau-ebike.com/products/flash-2
  9. Eunorau E-Mobility USA Corp. "FLASH AWD 1.0" product page: dual 750 W hubs, 4.0 A charger, $2,099. Retrieved 2026-09-05. https://eunorau-ebike.com/products/flash-awd-1-0 · Archive: https://web.archive.org/web/20260905053020/https://eunorau-ebike.com/products/flash-awd-1-0
  10. Eunorau E-Mobility USA Corp. "Warranty" (24-Month+ Limited Warranty, bikes bought on or after 2023-08-01): terms, requirements 1–6, uncovered items, dealer clause. Retrieved 2026-09-05. https://eunorau-ebike.com/pages/warranty · Archive (superseded page, same session): https://web.archive.org/web/20260905060531/https://eunorau-ebike.com/pages/eunorau-warranty
  11. Eunorau E-Mobility USA Corp. "Eunorau Warranty" (superseded terms, pre-2023-08-01). Retrieved 2026-09-05. https://eunorau-ebike.com/pages/eunorau-warranty · Archive: https://web.archive.org/web/20260905060531/https://eunorau-ebike.com/pages/eunorau-warranty
  12. Eunorau E-Mobility USA Corp. "Shipping Information": free to the lower 48, +$500 Alaska/Hawaii, Las Vegas warehouse. Retrieved 2026-09-05. https://eunorau-ebike.com/pages/shipping-information · Archive: https://web.archive.org/web/20260905060805/https://eunorau-ebike.com/pages/shipping-information
  13. Eunorau E-Mobility USA Corp. "Return Policy": seven calendar days, re-sellable condition, customer-paid freight. Retrieved 2026-09-05. https://eunorau-ebike.com/pages/return-policy · Archive: https://web.archive.org/web/20260905060727/https://eunorau-ebike.com/pages/return-policy
  14. Eunorau E-Mobility USA Corp. "We are UL 2849 tested and UL 2271 tested!", news post, 2023-03-05. Retrieved 2026-09-05. https://eunorau-ebike.com/blogs/news/we-are-ul-2849-tested-and-ul-2271-tested · Archive: https://web.archive.org/web/20260905060708/https://eunorau-ebike.com/blogs/news/we-are-ul-2849-tested-and-ul-2271-tested
  15. Eunorau E-Mobility USA Corp. US storefront product feed (98 products), the index of the 34 rendered catalog pages read for the charger census. Retrieved 2026-09-05. https://eunorau-ebike.com/products.json (the Internet Archive's save endpoint returned HTTP 523 for this URL on 2026-09-05; the 34 rendered pages are deposited locally)
  16. United States Code. 15 U.S.C. § 2085, "Low-speed electric bicycles", subsections (a) and (b). Legal Information Institute edition. Retrieved 2026-09-05. https://www.law.cornell.edu/uscode/text/15/2085 · Archive: https://web.archive.org/web/20260905060941/https://www.law.cornell.edu/uscode/text/15/2085
  17. California Legislative Information. Vehicle Code § 312.5, as amended by Stats. 2024, ch. 791 (SB 1271), effective 2025-01-01: subsections (a), (c), (d)(1). Retrieved 2026-09-05 from the Internet Archive capture of that morning after two direct attempts timed out. https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH&sectionNum=312.5 · Archive: https://web.archive.org/web/20260905061406/https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH&sectionNum=312.5
  18. Code of Federal Regulations. 16 CFR § 1512.18, "Requirements for bicycles" (braking). Legal Information Institute edition; official text at the eCFR. Retrieved 2026-09-05. https://www.law.cornell.edu/cfr/text/16/1512.18 · https://www.ecfr.gov/current/title-16/chapter-II/subchapter-C/part-1512/subpart-A/section-1512.18
  19. Code of Federal Regulations. 36 CFR § 1.4, "Definitions" ("Electric bicycle"). eCFR current edition. Retrieved 2026-09-05. https://www.ecfr.gov/current/title-36/chapter-I/part-1/section-1.4 · Archive: https://web.archive.org/web/20260905061007/https://www.ecfr.gov/current/title-36/chapter-I/part-1/section-1.4
  20. U.S. Consumer Product Safety Commission. Recall database, full-text search "Eunorau" (zero rows) and recall 24075, Ride Aventon folding e-bicycles (control), 2024-01-04. Retrieved 2026-09-05. https://www.cpsc.gov/Recalls?search_api_fulltext=Eunorau · https://www.cpsc.gov/Recalls/2024/Ride-Aventon-Recalls-Sinch2-Folding-E-Bicycles-Due-to-Crash-and-Injury-Hazards · https://www.cpsc.gov/Recalls
  21. U.S. Energy Information Administration. Electric Power Monthly, Table 5.6.A, "Average Price of Electricity to Ultimate Customers by End-Use Sector, by State, June 2026 and 2025 (Cents per Kilowatthour)": U.S. Total residential 18.34; California 34.74; Texas 15.94. Retrieved 2026-09-05. https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_a · Index: https://www.eia.gov/electricity/monthly/
  22. UL Standards & Engagement. UL 2849, "Standard for Electrical Systems for eBikes", scope. Retrieved 2026-09-05. https://www.shopulstandards.com/ProductDetail.aspx?productId=UL2849
  23. UL Standards & Engagement. UL 2271, "Standard for Batteries for Use in Light Electric Vehicle (LEV) Applications", scope. Retrieved 2026-09-05. https://www.shopulstandards.com/ProductDetail.aspx?productId=UL2271
  24. Electrek (Micah Toll). "Eunorau Flash launched as 220-mile triple battery e-bike, and it's as ridiculous as it looks", 2023-04-13. History only. Retrieved 2026-09-05. https://electrek.co/2023/04/13/eunorau-flash-launched-as-220-mile-triple-battery-e-bike/ · Archive: https://web.archive.org/web/20260905061430/https://electrek.co/2023/04/13/eunorau-flash-launched-as-220-mile-triple-battery-e-bike/
  25. Reddit, r/ebikes. Comment mh894in in the thread "I'm a trucker and need help choosing an inverter": "most ebike chargers are gonna be 2 amp output". Retrieved 2026-09-05 through the pullpush.io archive; a lead only. https://reddit.com/r/ebikes/comments/1j8jh25/im_a_trucker_and_need_help_choosing_an_inverter/mh894in/
  26. Redtail eBikes. Eunorau FLASH LITE 2.0 product listing: $1,899, stock, terms. Retrieved 2026-09-05. https://redtailebikes.com/products/eunorau-flash-lite-2 · Archive: https://web.archive.org/web/20260905225830/https://redtailebikes.com/products/eunorau-flash-lite-2
  27. Redtail eBikes. Shipping policy and refund policy. Retrieved 2026-09-05. https://redtailebikes.com/policies/shipping-policy · https://redtailebikes.com/policies/refund-policy
  28. Redtail eBikes, first-party datasets. Charger census across 34 Eunorau catalog pages (scripts/census_eunorau_chargers.py, output research/eunorau-flash-lite-2/datasets/charger-census_20260905.csv); 51-jurisdiction screens at 750 W/20 mph and 750 W/28 mph (scripts/screen_bike_jurisdictions.py, outputs in the same folder; the compiled statute table is the one behind our state-by-state law page, https://redtailebikes.com/blogs/journal/electric-bike-laws); demand harvest of 1,549 rows (keywords/harvest/eunorau-flash-lite-2_20260905.csv, indexed with every review at https://redtailebikes.com/blogs/journal/ebike-reviews). Run 2026-09-05.