Eunorau R1 Review 2026: 130 lb, 55 MPH, $3,750

72V 4,000W mid-motor · 8,000W peak · 55 MPH · 72V 35Ah LG · 130 lb · 32.9" seat · 203mm fork · 4-piston hydraulics · $3,750 · verified August 27, 2026

Quick Answer — The Eunorau R1 is a $3,750 electric dirt bike built with Rerode, running a 72V 4,000W mid-motor that peaks at 8,000W and a published 55 mph. It sits below the R1+ in the range, and for most riders it is the better of the two: 20 lb lighter, $749 cheaper, and it carries more fork travel rather than less. Like every machine in this family it has no pedals, which puts it outside the federal e-bike definition entirely — private land, OHV areas and tracks only. See the R1 with free contiguous-US shipping.

In this guide

• What's on this page
• Who the R1 is for
• How we verified this review
• Eunorau R1 specifications
• R1 or R1+? The $749 question
• The two torque figures
• The legal position, in one paragraph
• The 75-mile claim, on two different bikes
• Range at speed
• Charging: a claim that undersells itself
• Brakes and suspension
• Fit: 130 lb and a tall seat
• The Mercer fit test
• Is the battery UL certified?
• Warranty
• Ordering, shipping and support
• Where you can legally ride it
• The honest ledger
• Who should buy it
• Before you buy: the checklist
• Limitations of this review
• The source register
• Frequently asked questions
• The bottom line
• Primary sources

What's on this page

• Who the R1 is for
• How we verified this review
• Eunorau R1 specifications
• R1 or R1+? The $749 question
• The two torque figures
• The legal position, in one paragraph
• The 75-mile claim, on two different bikes
• Range at speed
• Charging: a claim that undersells itself
• Brakes and suspension
• Fit: 130 lb and a tall seat
• The Mercer fit test
• Is the battery UL certified?
• Warranty
• Ordering, shipping and support
• Where you can legally ride it
• The honest ledger
• Who should buy it
• Before you buy: the checklist
• Limitations of this review
• Frequently asked questions
• The bottom line

Who the R1 is for

Someone who wants a real electric dirt bike, has legal ground to ride it on, and would rather put the difference in price toward gear and a trailer than toward a top speed they will use twice a year. (published 55 mph and 130 lb)

Eunorau's own action photograph. Worth noticing what the rider is NOT wearing: a soft-shell jacket, ordinary trousers and low canvas shoes on the pegs. A 55 mph machine asks for a DOT or ECE helmet, boots and armor. This is not a picture of that.

None of that is a backhanded compliment. The R1 is the machine in this family that most riders will actually get more out of, and the reason is weight. At 130 lb it is a bike you can pick up off a hillside on your own. Its sibling, at 150, is a bike you and a friend pick up together. (both weights, published)

It is the wrong machine if you were shopping for an e-bike — our electric bike buying guide is the better starting point if that is you. There are no pedals here, and no configuration that changes what that means (federal definition) — our R1+ review works through the federal definition clause by clause, and everything in it applies equally to this bike.

It is also wrong if you have nowhere off-road to ride. Of everything on this page, that is the constraint that catches people out, and it is worth settling before you spend $3,750.

And we will help you settle it. Start with the BLM's off-highway vehicle program for federal land near you, then your own state's OHV agency for permits and season dates. If that is a dead end where you live, tell us your state before you order — we would rather lose the sale than sell you a machine with nowhere to ride it.

Eunorau's own photograph, and a fair statement of where this machine belongs: a riverbed, a long way from a road. Note the kickstand — on ground like that it is the difference between a parked bike and a dropped one.

How we verified this review

What we did. We archived Eunorau's own R1 product page on 27 August 2026 — the product is titled R1-19 on their site — and read every specification from that deposit copy. We opened all ten of Eunorau's studio and environmental photographs at full size, and confirmed on the R1's own images that the machine has no pedals, rather than carrying that finding across from its sibling. We pulled the R1+ specification the same day so the comparison runs off two primary sources instead of memory. Price, colorways and stock come from our own live store record.

What we computed. Pack energy, the implied efficiency behind the range claim, the range bands, the charge-time check, and every figure in the comparison table. The script and both datasets are saved and re-runnable.

What we asked the manufacturer. On 27 August 2026 we put four questions to Eunorau: which standard the "UL CERTIFIED" claim refers to, the R1's seat height, whether the e-bike warranty policy applies to this machine on identical terms, and the basis of the 75-mile range figure. Their answers will appear here in their own words when we have them, and this page records that we asked either way.

Sole publisher. Almost everything here exists only in Eunorau's own publication. There is no independent test of this machine by anyone, and we would rather name that than let a spec table imply corroboration it does not have.

What we did not do. We have not ridden it. No handling, comfort or performance verdict appears anywhere below.

Neutrality. Redtail sells this bike. The honest ledger carries what does not flatter it. Corrections: corrections@redtailebikes.com.

Reviewed by the Redtail editorial desk. Verified 27 August 2026.

Eunorau R1 specifications

Quoted from Eunorau's published specification for the R1-19, retrieved 27 August 2026. The watt-hour figure is our arithmetic and is marked as ours.

The Black finish — one of the three we stock, alongside Silver and Maple, all at the same price.

The silver finish, and the clearest look at the layout: motor low and central, chain to the rear wheel, footpegs where a bicycle would have cranks. Nothing on this machine turns under your feet.

R1 or R1+? The $749 question

This is the question people actually type. Our autocomplete harvest for this review returned the completion "difference between r1 and r1", which is a search engine telling you that buyers cannot separate these two machines. (both spec sheets, pulled the same day)

Here is the separation, from both of Eunorau's own spec sheets, pulled the same day.

What the extra $749 buys: 4 mph, 9,000 watts of peak, a 17mm bigger front rotor, and somewhere between 110 and 170 N·m depending on which of Eunorau's two published R1 torque figures you take. (R1 spec) (R1+ spec)

What it costs you: 20 lb, and 3mm of fork travel — the R1 has more suspension travel at the front than the machine above it in the range.

Read those two lines together and the case for the R1 makes itself.

From the front the four-LED bar and the R1 number board are both factory fitment. Note the fork stanchions run down into fatter lower legs — a conventional telescopic fork, where most modern dirt bikes run the upside-down type. The peak-power figure is the headline, but peak is a burst number; on a machine you are throwing at ruts and roots, twenty pounds and a longer fork are with you for every second of the ride. The R1 also keeps a 19-inch wheel at both ends where the R1+ drops to an 18-inch rear, so you stock one spare tube size instead of two. (wheel rows on both spec sheets)

Take the R1+ if you specifically want the 500 N·m and the bigger front brake, and the extra mass is not a problem for how you ride and how you load the machine — it is $4,499 and in stock too, and we are not trying to talk you out of it. Take the R1 otherwise, and put the $749 into a helmet, boots and a hitch carrier — all three of which you need and none of which is included.

The two torque figures

Eunorau publishes this machine's peak torque twice, and the two figures do not agree.

Neither is hidden and neither is a typo we can prove. The 330 N·m figure appears in more places, including the machine-readable product data a comparison site would read; the 390 N·m figure appears once, in the spec tab most buyers actually look at. (Eunorau product page)

We are not going to adjudicate it, because we cannot. No independent measurement of this motor exists. The gap is 60 N·m, about 18%, and if peak torque is the number deciding your purchase it is worth asking us to get it confirmed in writing before you pay. We have put the question to Eunorau.

Everywhere else on this page we use the range those two figures describe rather than picking a winner.

The legal position, in one paragraph

The R1 has no pedals. We confirmed that on Eunorau's own photographs of this machine, at full size, across all ten frames.

That single fact places it outside the federal definition of a low-speed electric bicycle at 15 U.S.C. § 2085(b), which requires "fully operable pedals" before it reaches any question of power or speed.

The three-class statutes carry the same pedal requirement — twenty-six states had adopted that system as of the most recent NCSL survey,

Our e-bike laws hub sets out what the three classes are. (the model definitions) (retrieved independently at govinfo) (federal bicycle definition) (state class adoption) (the three-class model) So this is an off-highway machine: private land, OHV areas and tracks, and not bike lanes or multi-use paths. (federal motor-vehicle scope) (BLM OHV program)

We are not going to run that argument twice. Our R1+ review works through it clause by clause (15 U.S.C. § 2085(b)), with the statute quoted in full and a table showing what the machine publishes against each requirement.

Everything in it applies to the R1 without modification. Eunorau is straightforward about the category, calling it an Electric Dirt Bike and gating its own storefront at eighteen. Our e-bike brands guide explains how we assess the makers we stock.

The darker of the three finishes we stock. Same machine underneath, same price.

The 75-mile claim, on two different bikes

Eunorau's range row for the R1 reads: "75MI / 120KM (under 16MPH/25KMH)."

Credit where it is due — the test condition is printed in the specification, which is more than most of this category manages. (Range row) Note what it says, though: 75 miles is measured under 16 mph, on a machine rated at 55.

Now the part that only shows up when you read both spec sheets side by side. The R1+ publishes exactly the same 75 miles at exactly the same under-16 mph — from a bigger battery.

The R1 is asked to cover the same ground on 360 Wh less, which requires it to be about 14% more efficient. (both battery rows) It is 20 lb lighter, so that is entirely possible. There is a straightforward reason this happens across the category: manufacturers commonly publish one range figure for a whole platform, tested once at one condition on one configuration, and carry it across the trims. On the evidence here, that is the likeliest explanation.

What to take from it: treat 75 as a family figure and a ceiling, never as a measurement of this specific bike, and plan against the table below instead.

Range at speed

The arithmetic is ours. Nominal pack energy is voltage times amp-hours, and it is nominal, not usable: no pack runs to zero, so these are the most generous numbers the claim can support.

Be clear about what those lower three rows are: typical consumption envelopes for an off-road electric motorcycle of this mass, not measurements of this machine. Nobody has published a measured range for the R1, us included. They are here to show the shape of the curve, because a single headline number hides it.

Plan around the middle of the table. A 45-mile trail day is realistic; a 75-mile one is a crawl. (published range condition)

Charging: a claim that undersells itself

Worth checking, because it comes out in Eunorau's favour.

The published charger is 72V 10A, which delivers 720 watts. The pack holds 2,520 Wh. (charger and battery rows) That works out to 3.5 hours for a full charge — and Eunorau publishes 4 hours.

They are quoting the slower number. (charge time row) Real charging does taper as a pack fills, so 4 hours is the more honest figure to plan a day around, and it is the direction you want a manufacturer erring in. After checking a lot of range and charge claims that go the other way, this one is worth pointing out.

Brakes and suspension

Eunorau publishes four-piston hydraulic brakes on 203mm rotors front and rear, with a motor cut-off switch in the lever. Suspension is a FASTACE fork with 203mm of travel and an 85mm rear shock. (brake and suspension rows)

The fork is the number to notice. 203mm is genuinely long-travel — and, as the comparison table shows, it is 3mm more than the R1+ carries.

From behind, the rear disc and the monoshock tucked under the seat. The R1 runs a 19-inch wheel here as well as up front, so one spare tube covers both ends. Matching 203mm rotors at both ends also means one spare pad size and one rotor size to stock. (rotor rows)

The rear shock's 85mm is a fraction of what the fork offers.

The fork is the component worth looking at here — 203mm of travel, which is more than the pricier R1+ carries. The front rotor behind it is 203mm, matching the rear.

The ratio is normal for this layout, where the fork does most of the absorbing, though it is worth knowing before a fast rocky descent.

The rear shock does far less work than the fork — 85mm against 203mm. On a fast rocky descent that is where you will feel the machine's limit first.

We have not measured this machine's braking, and no published measurement exists from anyone. What we can say is what is fitted and that the sizes are proportionate to 130 lb at 55 mph. How it actually stops is untested.

Fit: 130 lb and a tall seat

Eunorau publishes a recommended rider height of 5'2" to 6'4", a weight of 130 lb / 59 kg, a load capacity of 220 lb, and — in a geometry diagram on the same product page — a seat height of 835mm, or 32.9 inches. (spec block read in full)

Seat height is the number that decides whether you can hold the machine up at a stop on uneven ground, and 32.9 inches is tall — mid-size motocross territory. A rider at the 5'2" end of the published height range will be on their toes.

The R1+ sits marginally taller at 840mm in its own diagram, though that page's spec text says 845mm — so treat either family figure as approximate and measure your inseam against 32.9 inches rather than against your height. (R1 geometry diagram)

The 220 lb load capacity is the other number worth reading. That is rider plus gear plus anything strapped on, and it is lower than several bicycles we have reviewed.

The 130 lb is the specification that changes daily ownership most. (weight row) It is still a motorcycle's weight. No bicycle rack is rated for it, and transport means a carrier, trailer or truck ramp. But it is twenty pounds under the R1+, and twenty pounds is the difference between righting a dropped bike alone and waiting for help.

The Mercer fit test

The Mercers are our editorial cast: a fixed group of American riders of different ages, heights and lives that every bike on this site gets held against. You can meet them here. Every verdict below reads a published number from Eunorau's own specification — we have not ridden this machine, so none of them is a ride impression.

The figures doing the work: the published 5'2"–6'4" rider range, 130 lb, 55 mph, and the fact that this is an off-highway vehicle rather than a bicycle. (Eunorau specification) (not a bicycle: 15 U.S.C. § 2085(b))

The row worth reading twice is Jack's, because it is the only yes on the table and it is a yes to this bike specifically rather than to the family. The thing that makes the R1 his machine instead of the R1+ is not power — he would never miss the difference — it is that at 130 lb he can get it upright alone on a hillside a mile from the truck. The whole case for the cheaper bike sits in that sentence, and it is a better case than the spec sheet makes it look.

Is the battery UL certified?

Eunorau's product page states "UL CERTIFIED: Yes." It does not name a standard.

Unqualified UL claims with no standard number are common across this category — this is a category habit before it is a Eunorau one — and the thing that settles it either way is the document. Two standards are relevant: UL 2849 covers the whole electrical system, and UL 2271 covers the battery pack alone. (UL 2849) (UL 2271) A machine can hold one and not the other.

We did not find a published certificate, a file number or a listing reference for the R1. (Eunorau product page) Eunorau's UL page, at https://www.eunorau-ebike.com/pages/ul-certification, returned HTTP 404 on 27 August 2026. That URL appears as plain text and is not linked: a path that does not resolve is evidence, never a citation.

So the position is: Eunorau asserts certification and we could not establish which standard is meant. That is not a claim that the assertion is false, and it is not a claim the pack is uncertified. If a named standard matters to your insurer or your building, ask us and we will request the certificate before you pay.

On the safety record there is better news, from a source that answers to nobody. We queried the CPSC SaferProducts database on 27 August 2026 on two separate fields, and a control query for "bicycle" returned 431 records on the same call. Eunorau returned zero on both. No Eunorau product appears in the federal recall database. (CPSC SaferProducts)

Warranty

Eunorau publishes 10 years on the frame and 24 months each on battery, motor and electrical components, covering manufacturing defects and excluding wear items and labor. (Eunorau warranty policy)

One clause to read before you buy: products "sold at wholesale or purchased by a business for commercial use (e.g., rental fleets, delivery services, sharing programs)" carry a 50% reduction of those periods. The trigger is the purchase channel, not what an owner later does with the machine. (warranty requirement 6, quoted verbatim)

A second thing we cannot resolve for you. (Eunorau warranty policy) That policy is written for Eunorau's e-bikes, and this page's own argument is that the R1 is not one. Whether it reaches this machine on identical terms is not stated anywhere we could find, and it is on our list to ask.

Ordering, shipping and support

The questions a $3,750 crated machine raises. Where we do not know, we say so. (our price and stock) (our refund policy)

Where you can legally ride it

Your state's OHV agency and DMV are the offices that can answer the road question. California riders can start with our California e-bike law guide. (BLM OHV program) (state class statutes) Our state e-bike law guides explain the class system this machine sits outside of, which is a related but different question.

The honest ledger

Green flags

• The better-value machine of the two, on Eunorau's own numbers: 20 lb lighter and 3mm more fork travel than the model above it, for $749 less.
• A published continuous figure next to the peak — 4,000W and 8,000W both appear, which is more disclosure than the category norm.
• 390 N·m and a 203mm FASTACE fork, with 4-piston hydraulics on matched 203mm rotors.
• The charge claim undersells itself — 720 W into 2,520 Wh is 3.5 hours and they publish 4.
• The range figure carries its test condition, printed in the specification.
• LG cells named in a 2,520 Wh removable pack.
• 19-inch wheels at both ends, so one spare tube size instead of two.
• 10-year frame warranty, plus 24 months on battery, motor and electrics.
• Zero CPSC recalls for Eunorau, confirmed against the federal database with a positive control.

Red flags

• No pedals, so this is not an e-bike and no setting makes it one — see our Riding'times GT73 Pro review for another out-of-class machine in the same category. If you were shopping that category, this is the wrong machine.
• A 220 lb load capacity — rider plus gear plus luggage, and lower than several bicycles we have reviewed.
• The 75-mile range is quoted at under 16 mph, and the identical figure appears on a bike with a 360 Wh bigger pack.
• "UL CERTIFIED: Yes" names no standard, and Eunorau's own UL page returns a 404.
• 130 lb rules out every bicycle rack and makes a drop on a hill a two-person job at worst.
• Nowhere legal to ride is a real risk rather than a footnote, and it is the most common reason a machine like this goes unused.
• The warranty document is written for e-bikes, and this is not one.

Who should buy it

Buy it if you have legal ground to ride on, you want a full-size electric dirt bike, and you would rather have the lighter machine than the faster one. (price and stock) That describes most people looking at this family.

Buy the R1+ instead if you specifically want 500 N·m and the 220mm front rotor, and 20 extra pounds does not trouble you. (R1+ specification)

Do not buy either if you were shopping for an e-bike, if your riding is on roads or paths, or if you have no private land, OHV permit or track access. (BLM OHV program)

Ask first if a named UL standard is a requirement where you live, or if you need the seat height before you can judge the fit. Both are answerable before you pay.

Before you buy: the checklist

• [ ] Settle where you will ride it — private land, OHV area or track — before anything else. Start at the BLM OHV program and your state OHV agency, or ask us.
• [ ] Measure your inseam against the 32.9" seat height, and check your riding weight against the 220 lb load capacity.
• [ ] Decide R1 or R1+ on weight rather than peak power. Twenty pounds is the real difference.
• [ ] Arrange transport: carrier, trailer or truck ramp. No bicycle rack is rated for 130 lb.
• [ ] Budget for motorcycle-grade gear — a DOT or ECE helmet, boots and an armored jacket.
• [ ] If UL 2849 matters to you, request the certificate before ordering.
• [ ] Check the age and supervision rules of the specific OHV area or track you will use.
• [ ] Inspect and photograph the crate at delivery; damage has a 48-hour window.
• [ ] Note that an assembled or ridden machine is not returnable.

Limitations of this review

1. We have not ridden it. Every statement is a reading of a published number, arithmetic from one, or an observation from Eunorau's photography.
2. The lower three range rows are typical consumption envelopes, not measurements of this machine. No measured range exists from us or anyone else.
3. Eunorau publishes two peak-torque figures for the R1 — 330 N·m and 390 N·m — and we report both rather than choosing between them.
4. The UL question is unresolved. We report the claim and the 404 and assert nothing either way.
5. The 50° climb angle and IP65 rating are Eunorau's own, with no independent test published anywhere.
6. Whether the e-bike warranty policy covers this machine is unstated by Eunorau.
7. Competitor figures cited in this review come from an AI-search panel and are graded T3. We have not opened those manufacturers' spec sheets.
8. No search-volume figures appear here. We do not publish numbers we cannot source.
9. Two corrections were made before publication. An earlier draft treated 390 N·m as the settled torque figure; Eunorau in fact publishes 330 N·m in its product description and structured data and 390 N·m in its spec tab, and this page now reports both. The same draft stated that no seat height was published; Eunorau publishes 835mm (32.9in) in a geometry diagram on the product page, and that figure is now used throughout.
10. Expiry: re-verify if Eunorau revises the specification, publishes a seat height or a UL certificate, or if either price moves.

The source register

Frequently asked questions

Should I buy the Eunorau R1 or the R1+?

The R1 for most riders. (both spec sheets) The R1+ costs $749 more and buys 4 mph, 110 N·m and a 17mm bigger front rotor, while adding 20 lb and giving up 3mm of fork travel. Unless you specifically want the extra torque and brake, the lighter machine is the better bike to own.

How fast is the Eunorau R1?

Eunorau publishes a maximum speed of 55 mph (85 km/h). (Maximum Speed row)

What is the real range of the Eunorau R1?

Eunorau publishes 75 miles and states the condition: under 16 mph. From the 2,520 Wh pack that implies 33.6 Wh per mile. (battery and range rows) At a moderate trail pace expect nearer 46 miles, and at the published 55 mph top speed our arithmetic puts it around 23. (battery row)

How long does the Eunorau R1 take to charge?

Eunorau publishes 4 hours on the supplied 72V 10A charger. The arithmetic gives 3.5 hours — 720 watts into 2,520 Wh — so the published figure is the conservative one, which is the right way round. (charger rows)

Is the Eunorau R1 street legal?

Not as delivered. It has no pedals, so it meets neither the federal definition of an electric bicycle nor the pedal requirement the three-class statutes carry, and it is not sold with motorcycle registration.

It is an off-highway machine for private land, OHV areas and tracks. Our R1+ review sets out the statutory reasoning in full.

How much does the Eunorau R1 weigh?

130 lb (59 kg) — twenty pounds under the R1+, which is the strongest practical argument for this model. (both weights, published)

What size rider does the Eunorau R1 fit?

Eunorau publishes a rider height range of 5'2" to 6'4", a seat height of 835mm (32.9 inches) in its geometry diagram, and a load capacity of 220 lb. (Eunorau product page and geometry diagram) Measure your inseam against 32.9 inches — on a dirt bike that decides fit far more than your height does.

Does the Eunorau R1 have pedals?

No. There are footpegs, a mid-mounted motor and a 420 motorcycle chain. We confirmed this on all ten of Eunorau's own photographs of this machine. (Eunorau photography)

Is the Eunorau R1 4,000W or 8,000W?

Both are Eunorau's, and they are not in conflict: 4,000W is the continuous rating and 8,000W is the short-burst peak. (Motor row) Retailer listings that headline 8,000W are quoting the peak.

Does the Eunorau R1 have a UL-certified battery?

Eunorau states "UL CERTIFIED: Yes" without naming a standard, and its own UL page returned a 404 on 27 August 2026. (Eunorau product page) We could not determine whether UL 2849 or UL 2271 is meant. Ask us to request the certificate before you order.

Has the Eunorau R1 been recalled?

No. We queried the CPSC SaferProducts database on 27 August 2026 on two fields and found no recalls for any Eunorau product, with a control query confirming the search worked. (CPSC SaferProducts)

Can a 16-year-old ride the Eunorau R1?

Not on a public road — that needs registration and a license, and your state's DMV is the office that decides both. Off-road, OHV areas and tracks set their own age and supervision rules, so check the specific venue. Separately from the law, a 55 mph machine is a poor first vehicle at any age, and Eunorau's own storefront asks whether you are eighteen.

What is the warranty on the Eunorau R1?

Ten years on the frame and 24 months each on battery, motor and electrical components, covering manufacturing defects only. (Eunorau warranty) A wholesale or business purchase halves those periods. (warranty requirement 6) Note that the policy is written for Eunorau's e-bikes, and whether it reaches this machine on identical terms is not stated.

The bottom line

The Eunorau R1 is the machine in this family most riders should be looking at, and the spec sheet does a poor job of saying so.

The headline numbers all favour the R1+ — more peak watts, more torque, a bigger front rotor, four more miles an hour. (both spec sheets) Read the whole table and the picture changes. (R1 specification) The R1 is twenty pounds lighter, carries three millimetres more fork travel, runs one wheel size at both ends, and costs $749 less. On a machine you will be picking up off a hillside, twenty pounds beats four miles an hour every time.

Three things to know before you order. (federal definition) There are no pedals, so this is an off-highway vehicle and needs somewhere legal to ride — settle that before you spend anything. The seat is 32.9 inches and the load capacity is 220 lb — measure your inseam against the first and your riding weight against the second. And Eunorau publishes two different torque figures, 330 and 390 N·m, which we report rather than resolve.

Credit where it is earned: the charge claim is conservative, the range figure carries its test condition, and the continuous rating sits next to the peak. (Eunorau specification) That is better disclosure than most of this category offers.

Buy it if you have the ground to ride it on and you would rather have the lighter bike.

Primary sources

1. Eunorau. R1-19 — product specification and photography. eunorau-ebike.com/products/r1. Retrieved 27 August 2026; deposit copy archived. Source of every specification, and of the photographs on which the absence of pedals was confirmed.
2. Eunorau. R1+ — product specification. eunorau-ebike.com/products/r1-plus. Retrieved 27 August 2026; deposit copy archived. Source of every R1+ figure in the comparison table.
3. Eunorau. 24-Month+ Limited Warranty. eunorau-ebike.com/pages/warranty. Retrieved 27 August 2026. Source of the frame and component terms and the wholesale/business clause.
4. United States. 15 U.S.C. § 2085(b) — Low-speed electric bicycles. law.cornell.edu/uscode/text/15/2085. Retrieved 27 August 2026; corroborated at govinfo.
5. U.S. Consumer Product Safety Commission. SaferProducts recall database. saferproducts.gov/PublicSearch. Queried by REST API 27 August 2026 on two fields; both zero, with a control query returning 431 records.
6. UL Standards & Engagement. UL 2849 and UL 2271. Retrieved 27 August 2026.
7. UL certification page — https://www.eunorau-ebike.com/pages/ul-certification. Returned HTTP 404 on 27 August 2026, and is printed as plain text rather than linked.
8. U.S. Bureau of Land Management. Off-Highway Vehicle program. Retrieved 27 August 2026.
9. Redtail eBikes. Eunorau R1 store record (listing) and refund policy. Retrieved 27 August 2026.
10. Redtail eBikes editorial desk. R1 range, charge and comparison computation. First-party dataset, scripts/r1_range_math.py with outputs in research/eunorau-r1/datasets/, computed 27 August 2026.