Freesky Eurostar Turbo Review 2026: 2 Motors, $1,299

2 × 2,000 W peak hub motors · 210 N·m · 48 V 25 Ah · 60–105 miles on one motor, 40–70 on two · 20 mph by default · 99 lb · 400 lb capacity · $1,299 · verified September 25, 2026

Quick Answer — The Freesky Eurostar Turbo M-410 is a $1,299 full-suspension fat-tire e-bike with a hub motor in each wheel, four-piston hydraulic brakes and a 48 V 25 Ah battery, limited to 20 mph by default. Computed for a 180 lb rider on flat pavement, both motors: about 67 miles at 15 mph on the throttle, 49 at 20.

Freesky publishes 60 to 105 miles on one motor and 40 to 70 on two. This review works those bands out ride by ride from published motor data and a validated cycling-power model: on the throttle on flat pavement at 10 to 20 mph the two modes use within 3% of each other, and climbing 4 to 8% grades two motors use 18 to 27% less.

Settle one question first: Freesky's own FAQ says riding faster than 20 mph takes "a license, license plates, and insurance", and the class section shows why.

What this review covers

What $1,299 buys · What it is · Sizing · Two hub motors · The battery · How far it goes · Brakes and lights · Suspension and tires · Weight and load · The Mercer fit test · UL · Recalls · The class question · Where to ride it · Green and red flags · The verdict · Checklist · Buying it from us · FAQ · Limitations · The bottom line · References

How we verified this Freesky Eurostar Turbo review

Every figure on this page was read from a document on September 25, 2026: Freesky's product page and its product record, the owner's manual it links, both UL certificates, our own listing and the statutes quoted in the class section. The range figures are computed, and the formula lists every input with its source.

This is a specification-verified review: each number is Freesky's, a certificate's, a statute's, or arithmetic shown on the page. We sell this bike, so read the red flags as closely as the green.

Written by Milad Ghobadibeygvand, BScN (Western University, 2014). Corrections: support@redtailebikes.com.

What $1,299 buys

Read from Freesky's product page and its product record on September 25, 2026. The headlight's 800 lumens is in the product record; every other row is on the page.

A dual-motor fat-tire bike built for loose ground

A fat-tire e-bike with one motor pushes from one wheel, and Freesky's own guide to dual-motor bikes names where that runs out: "Loose surfaces often cause a single driven wheel to lose grip." Sand, snow, gravel and mud are on its list.

The Eurostar Turbo answers with a second hub motor in the front wheel. Freesky's product page titles it an "Off-Road & Dual Motor eBike", and the same page publishes a range for each mode: one motor, or both. Which one you ride is the decision this review keeps returning to, because on hills and on gently pedaled miles it changes how far the battery goes.

Freesky announced the bike in July 2026. Its launch post lists a launch price of $1,299 against a regular retail price of $1,399, with US shipping estimated after August 1. On September 25, 2026, Freesky's page and ours both charged $1,299.

Freesky photographs the Turbo on loose rock and gravel, one of the surfaces its dual-motor guide lists.

Sizing: one frame, 5'3" to 6'8"

Freesky publishes one frame size for the Eurostar Turbo and a rider height of 5'3" to 6'8", with an inseam range of 27 to 35 inches.

Size from two rows: the standover and the seat height. The standover is how high the frame sits where you straddle it, 28.0 inches here, so compare it with your inseam measured in socks against a wall. The saddle runs from 33.9 to 41.3 inches off the ground on Freesky's 300 mm seatpost.

At 82.7 inches long and 44.1 inches tall, measure the space where you will park it, too.

Two 2,000 W peak hub motors, and when to run one

Freesky's product page describes "two 2000W hub motors in the front and rear, reaching 34 MPH with pedal assist or throttle", at 105 N·m each. The wattage is a peak figure, the most each motor gives for a moment.

The front hub motor sits behind the disc rotor, inside the wheel it drives.

A hub motor turns with its wheel. Each motor's speed is set by its wheel's speed, whatever gear you choose, so the Shimano seven-speed changes how fast your legs turn and never how fast the motors do. The range section works out what that means for your battery.

The rear motor is the hub the cassette is mounted on, so the chain and the motor drive the same wheel.

Assist comes from a cadence sensor: the motors help once the cranks turn, at whichever of the five assist levels you pick, and the thumb throttle drives the bike without pedaling. Freesky's manual starts a new rider on one motor: "On flat terrain, in a low gear (1 or 2), and using rear-wheel drive only, most riders can begin pedaling with pedal assist set to level 0 or 1."

Use one motor on easy, flat riding and both for climbs and loose ground. Pedaling gently at 12 mph on the flat, one motor uses 6.4 Wh a mile against 7.5 for two; climbing an 8% grade at 10 mph on the throttle, one motor uses 133.5 Wh a mile and two use 97.1. Both pairs come from the range model.

The 48 V 25 Ah battery: 1,200 Wh and a 6–8 hour charge

The pack is 48 V × 25 Ah, which is 1,200 watt-hours: Freesky's two published numbers multiplied. The UL 2271 certificate Freesky links from this bike's page rates its battery, model FP4825R0, at 47.19 V and 24.5 Ah, which is 1,156 Wh; on that figure every range number on this page is 3.7% lower.

Freesky's two range bands, set against the 1,200 Wh, show how much energy each end of each band allows per mile:

Our division: 1,200 Wh by each of Freesky's published distances. The range section finds the steady rides that match each row.

The down tube carries the pack; Freesky's manual shows it unlocking with a key and coming out to charge.

The battery is removable and charges on or off the bike. The charger is a "US Standard 3A Smart Charger", and the UL 2849 certificate lists its output as 54.6 V DC at 3.0 A. Freesky's comparison chart gives 6 to 8 hours to charge; 25 Ah at 3 A is about 8.3 hours by simple division, so from a low battery plan on an overnight charge.

Charge and store it between 50 and 77 °F if you can. Freesky's manual says the bike is not meant to be used or stored below 32 °F or above 104 °F, and the battery should only be charged between those two temperatures; its maintenance table asks for a dry place at 50 to 77 °F. Freesky's summer charging guide adds that "If full range is not needed, charging to 80–90% can reduce thermal and chemical stress."

How far the Eurostar Turbo goes: your range, one motor or two

On flat pavement, a 180 lb rider on both motors gets about 67 miles from a full charge at 15 mph on the throttle, 49 at 20 and 101 pedaling easily at 15. Climb an 8% grade at 10 mph on the throttle and the whole charge lasts 12 miles on both motors, 9 on one.

Find your ride in three steps:

1. Pick your speed and effort in the first two tables.
2. Allow 166 to 217 Wh of the 1,200 for every 1,000 feet you climb on both motors, and run both motors on the climb (one motor or two).
3. Adjust for your weight and the temperature, then plan with 80% of the result.

Every figure is computed, one steady ride at a time, from Freesky's own figures for the bike, Bafang's published data for a comparable 48 V geared hub motor, the measured rolling resistance of 26 × 4.00 fat tires and a cycling-power model validated on the road. The formula, the inputs and one ride worked line by line close the section.

Does riding faster cut range? Miles at each speed

On the throttle, every extra mile an hour costs range. A full charge that covers 67 miles at 15 mph covers 49 at 20, because pushing through the air at 20 mph takes (20 ÷ 15)³, about 2.4 times, the power it takes at 15.

Throttle only, both motors, flat pavement, a 180 lb rider on a 77 °F day. The last column plans from an 80% charge, the level Freesky's charging guide suggests when you do not need the full range. The rows above 20 mph price speeds past Freesky's default limit, which the class section covers.

On the flat, your own pedaling adds more miles than any other change in these tables. The tables call 75 W of your effort easy pedaling and 150 W steady. With the motors off, 75 W would carry this bike at about 9 mph on flat pavement and 150 W at about 13, so read the column that matches how fast you could ride unassisted.

Miles from a full charge on both motors, flat pavement, a 180 lb rider. Easy pedaling at 15 mph costs 11.9 Wh a mile against 18.0 on the throttle. Past 100 miles the motors add so little that stops, wind and your legs decide the day, so the table stops counting; "legs alone" means 150 W holds 12 mph with the motors adding nothing.

An assist level is the controller's rule for how much to add once the cranks turn. Whichever level you ride in, read the row for the speed you hold and the effort you put in; Freesky's manual gives the same advice in its own words: "Use lower PAS levels and pedal when climbing hills."

Which gear and which motors save battery? One motor or two

The gear is for your legs; the battery question is one motor or two. Both motors sit in the wheel hubs, so shifting changes your pedaling speed and leaves the motors' speed where the wheels set it. Choosing one motor or both does change it:

Battery watt-hours per mile, a 180 lb rider. "One motor" drives the rear wheel with the front hub freewheeling, as Freesky's manual suggests for a first ride; "both motors" splits the push evenly between them.

On a climb, two motors win because each carries half the pull. A motor's heating loss grows with the square of its current, so two motors at half the current each waste far less than one at full current: up an 8% grade at 10 mph that is 97.1 Wh a mile against 133.5, and the full charge lasts 12 miles against 9.

On an easy, flat ride the second motor costs you a little, because every motor that turns pays its own friction and magnet losses however little it is asked to do.

Pedaling gently at 12 mph that overhead is the difference between 6.4 and 7.5 Wh a mile. On the throttle from 10 to 20 mph the two modes land within 3% of each other, and at 25 and 28 mph two motors use 5.5 and 7% less.

So: one motor for gentle flat miles, both motors for climbs, loose ground and speed. Two motors also reach speeds one cannot: on the flat, one motor held to its rated power in this model tops out at 29.5 mph, and two reach Freesky's 34.

Does going uphill drain the battery faster?

Yes. On both motors, every 1,000 feet you climb costs 166 to 217 Wh more than the same miles on the flat, and on one motor 218 to 329 Wh. Between 48 and 63% of it is the work of lifting you and the bike, and the rest is what the motors and the pack lose doing it, a share that grows as the grade steepens.

Raising 279 lb, a 180 lb rider and the 99 lb bike, through 1,000 feet takes 105 Wh at the wheels.

On an 8% grade at 10 mph on both motors, the battery pays 199 Wh for it, so the full 1,200 Wh would lift you about 6,042 feet if it did nothing else. The range model gives nothing back on the way down; descents still cost less than flat miles, so a budget built from these rows errs high.

Throttle only, a 180 lb rider, each motor held to the 1,000 W rating of the comparable motor. The first two columns are the fastest steady speed each mode holds on that grade, capped at Freesky's published 34 mph; the last is the battery per mile and the whole charge spent climbing that grade at 10 mph.

Two motors hold Freesky's 20 mph default up a 14.8% grade on the throttle; one motor holds it up to 5.6%.

Budget a hilly ride as flat miles plus climbing. Twenty flat miles at 15 mph on the throttle is about 360 Wh. Add 2,000 feet of climbing on 8% grades at 199 Wh per 1,000 and the ride uses about 760 of the 1,200. The model treats every mile as steady, so stops, starts and wind come on top.

Does rider weight affect range?

A little on the flat, a lot on a climb. Weight adds to what the tires and the hill cost and nothing to what the air costs, so it matters most going up.

You plus everything you carry, with the bike's own 99 lb added to every row; both motors, throttle only. 300 lb of rider and gear plus the bike is 399 lb, inside Freesky's 400 lb load capacity whether or not the bike's weight counts toward it.

Going from 180 lb to 300 lb costs the flat 15 mph ride 11 miles, from 67 to 56. The 8% climb falls from 12 miles to 7, because on a hill most of the power goes into lifting weight.

Does cold weather drain the battery?

Yes, and the colder the air, the more it takes. At freezing, the 15 mph easy-pedaling ride that goes 101 miles at 77 °F goes about 77. Freesky's manual sets 32 °F as the lowest temperature to ride, store or charge the bike at, so the 14 °F row prices a day below Freesky's floor.

Both motors, a 180 lb rider, flat pavement. The central figure is the energy recomputed from McMaster University's LG HG2 cell data at a 0.5C discharge, half the cell's rated capacity per hour; the 77, 50, 32 and 14 °F rows are measured temperatures and the rest are interpolated. The table assumes the cells sit at the air temperature.

Where cell sources disagree the table prints a bracket. Its low end is the least capacity Samsung's data sheets print at that temperature at one to four times the rated capacity per hour (the 25R and 30Q at 32 °F, the 35E at 14 °F); its high end is the most energy measured at a gentler rate, Casado and colleagues' 2025 test of the 35E at 1 A at 32 °F and the HG2 at 14 °F.

Three things stack at 32 °F. The cells give about 89% of their 77 °F energy (80 to 93% across the sources), and the air is about 9% denser, by the gas law the U.S. Standard Atmosphere uses.

Cold rubber also rolls harder, which the model adds at 0.5% per °F (0.9% per °C) below 77 °F, between Rothhämel's linear fit for a 42 mm tire and Bicycle Rolling Resistance's road-tire average, holding the 41 °F value below that.

On a 95 °F day the model's range runs a little past the 77 °F figure: the thinner air and the softer, warmer rubber save more than the 1% the cells give up.

Do fat tires cut range? Tires and riding position

Tire choice moves your range more than the motor mode does on the flat. Bicycle Rolling Resistance measured ten 26 × 4.00 fat tires on its drum at 12 psi, 18 mph and a 94 lb load, and the rolling resistance ran from 23.2 to 42.1 W. The model uses the median of the ten, a coefficient of 0.0105, because Freesky's product page names no tread for the Turbo's 26 × 4" tires.

Miles from a full charge on both motors, flat pavement, a 180 lb rider. The lowest is Schwalbe's Jumbo Jim LiteSkin; the highest, Kenda's Juggernaut Pro, which Bicycle Rolling Resistance lists at a coefficient of 0.01262.

Keep the tires at pressure: Freesky's manual recommends 16 to 20 psi "for the stock tires", firmer than the 12 psi the drum figures were measured at. On dirt, sand and snow no drum number applies, so before you plan a trail ride on these rows, send us the route.

Sand is on Freesky's list of loose surfaces where one driven wheel can slip; no drum figure covers it.

Your riding position matters at speed. Bertucci and colleagues measured seated mountain-bike riders at 0.357 m² of drag area, and the 90 everyday riders on mountain bikes that Tengattini and Bigazzi measured averaged 0.603 m², the figure the tables use. At 20 mph on the throttle that gap is worth 67 miles against 49; neither study separates posture from clothing and bags.

Freesky's 60 to 105 miles and 40 to 70, matched to real rides

Freesky gives two bands, one per motor mode, and each end matches a steady ride. Freesky's manual calls them what they are: "The listed range and top speed of the bike are estimates, not guarantees of performance."

• 105 miles on one motor is 11.4 Wh a mile: pedaling easily at about 15.3 mph on flat pavement, or 6.9 mph on the throttle alone.
• 60 miles on one motor is 20.0 Wh a mile: about 16.6 mph on the throttle, or 20.1 pedaling easily.
• 70 miles on two motors is 17.1 Wh a mile: about 14.3 mph on the throttle, or 18.4 pedaling easily.
• 40 miles on two motors is 30.0 Wh a mile: about 23.2 mph on the throttle, or 25.2 pedaling easily.

On flat pavement from 10 to 20 mph the model finds the two modes within 3% of each other at the same speed on the throttle, so the gap between Freesky's two bands reads as a gap in riding speed.

Its two-motor 40 to 70 miles matches steady throttle rides of about 14 to 23 mph, its one-motor 60 to 105 miles throttle rides of about 7 to 17 mph or pedaled ones of about 15 to 20.

Plan with 80% of any figure here, which is what you get from the 80% charge Freesky's charging guide suggests, the same as riding with 20% kept in the pack: the 67 miles at 15 mph on the throttle becomes 53.

How every figure here is worked out

Holding a steady speed takes a steady flow of power at the wheels. Martin and colleagues' model, validated against riders on a real road in 1998, gives it in one line when the speed is held and there is no wind:

Power at the wheels = v × [ m × g × (Crr × cos θ + sin θ) + ½ × ρ × CdA × v² ]

Here v is your speed, m the mass of you and the bike, g gravity, θ the slope, Crr the tires' rolling resistance (0.0105 means they drag with a force of 1.05% of the weight on them), ρ the density of the air and CdA your drag area, your frontal size times how unstreamlined your shape is.

The first term in the bracket is the tires and the hill; the second is the air, which grows with the cube of your speed once it is multiplied by v.

From the wheels back to the battery takes four steps:

1. Your legs reach the rear wheel through the chain at 97.7% efficiency, the figure Martin's team used; the motors supply the rest.
2. One motor or two: in one-motor mode the rear motor carries all of it; in two-motor mode each motor carries half.
3. Each motor is modeled from a comparable motor's published figures. Bafang's 2021 OEM workbook prints its RM G0H0 48 V geared hub motor with an n0 of 510 rpm and an nT of 426 rpm beside a rated 1,000 W, and an efficiency of "≥ 80" percent. Read the usual way, as the speed with no load and at rated power, those are 41.9 and 35.0 mph on Freesky's 27.6-inch wheel, just above Freesky's published 34. The model takes 80% at the rated point and less at lighter loads.
4. The pack loses a little more inside itself, from the battery efficiency Arango, Lopez and Ceren measured on a 48 V pack.

Then watt-hours per mile = battery watts ÷ mph, and miles = 1,200 Wh × the share of the pack's energy the temperature leaves you ÷ watt-hours per mile.

One ride, worked through: 15 mph on flat pavement, throttle only, both motors, a 180 lb rider. Rolling resistance takes 87.7 W and the air 107.6 W, so the wheels need 195.3 W between them.

Each wheel turns at 183 rpm, and the motor model (0.899 N·m of torque per amp, a 0.304 Ω winding and a 1.10 A no-load current, all derived from Bafang's published figures) has each motor deliver 5.1 N·m on 6.8 A at 75% efficiency, below its 80% because the push is light. The two draw 261.1 W together.

The pack's own losses bring that to 269.5 W: at 15 mph, 17.96 Wh a mile, and 1,200 ÷ 17.96 is 66.8 miles, or 53.4 from an 80% charge.

Four-piston brakes, turn signals and an 800-lumen light

Freesky fits four-piston hydraulic disc brakes with 180 mm rotors on both wheels to stop a 99 lb bike with a 400 lb load capacity, and adds an 800-lumen headlight and turn signals.

How to use them is in Freesky's own words. Its product page says: "In case of emergency braking, apply the rear brake first, then the front brake." Its manual adds that "Relying only on the rear brake will significantly increase your stopping distance."

The taillight hangs under the rear rack, which comes in the box with the fenders.

For light, Freesky's product record lists an 800-lumen LED headlight, and the product page describes turn signals worked from the handlebar "with a simple press of a button". The color LCD shows the assist level, speed, battery, mileage and headlight status.

To switch the bike on, the manual has you press the switch on the battery first, then "use NFC to swipe the screen, or hold the power button and then enter the password: 1212".

120 mm fork, coil rear shock and 26 × 4 tires

Freesky lists a 120 mm oil-sprung suspension fork and a coil rear shock it describes as 180 mm. The fork has a preload knob on its left leg and a lockout lever on its right, per the manual: turn the knob toward its "-" mark to soften the fork and toward "+" to firm it, and lock it out, which the manual says "will typically yield higher efficiency while pedaling."

The fork, the front fender and the headlight on the fork's arch; the front hub motor sits behind the rotor.

The coil shock sits under the saddle, between the seat tube and the swingarm.

The tires are 26 × 4" fat tires, and Freesky's manual says: "Freesky recommends 16-20 PSI for the stock tires." The drum figures in the tire table were measured softer, at 12 psi.

The Shimano derailleur shifts seven cogs on the rear hub motor; the kickstand folds behind it.

The drivetrain is a Shimano 7-speed rear derailleur on a KMC chain, the frame is "Upgraded 6061 Aluminum", and the seatpost is a 30.9 × 300 mm alloy post.

99 pounds and a 400-pound capacity

Freesky publishes 99 lb for the bike and a 400 lb load capacity. The weight is on every one of its four colorways in Freesky's product record, so it applies whichever color you order.

Weigh yourself with everything you carry, then add the 99 lb. The heaviest row in the weight table, 300 lb of rider and gear, comes to 399 lb with the bike, inside 400 either way you count it. Every pound also comes out of your range on a climb: at 300 lb an 8% grade at 10 mph gets 7 miles from a full charge, against 12 at 180 lb.

The Mercer fit test

The Mercers are our editorial cast, a fixed family of seven we hold every bike against so the same questions get asked every time (meet the Mercers). Every row below reads a number Freesky publishes: its rider-height range, standover, weight, load capacity, or the minimum age in its manual.

The sharpest contrast is Jack and Cole. Father and son are both inside Freesky's 5'3" to 6'8" range, a couple of inches apart, and only Jack may ride it: Freesky's manual sets the minimum age at 18. Fit is the frame, the weight and the rider's age together.

Is it UL certified?

Yes: Freesky publishes two certificates from TÜV SÜD America, one for the electrical system and one for the battery, and links both from the product page.

Both certificates are held by GuangZhou Yansan Science & Technology Co., Ltd., of Guangzhou, China. Read September 25, 2026.

Freesky's product page describes UL 2849 as the standard for "complete e-bike electrical systems, covering batteries, motors, controllers, and wiring", and UL 2271 as the battery-pack standard. It shows both as badges ("UL2849 Certified by TÜV" and "UL2271 Certified by TÜV"), and both PDFs open from that page, so you can hand them to a building manager or an insurer as they are.

Has it been recalled?

No. We searched the Consumer Product Safety Commission's recall database on September 25, 2026 across a 623-record corpus built from bicycle, e-bike, battery and scooter terms, reading every field of every record, and queried its title, description, product-name and manufacturer fields directly. No record names Freesky or GuangZhou Yansan, the company that holds the bike's certificates.

The search was checked before its result was believed: in the same run, control brands returned their known recalls (Ancheer 1, Specialized 49, Trek 34), so the empty result for Freesky is a search that worked.

The class question: 20 mph as delivered, 34 mph published

Settle this before you buy, because Freesky publishes two speeds for this bike. Its product page gives 34 mph "with pedal assist or throttle", and the FAQ on the same page says:

All Freesky eBikes are limited to a maximum speed of 32 km/h (20 mph) by default, which complies with local e-bike regulations. If you wish to exceed this speed, you will need to obtain a license, license plates, and insurance for your eBike.

So the box holds two machines: the bike as Freesky sets it, capped at 20 mph, and the bike at the 34 mph Freesky publishes, which Freesky's own FAQ treats as a licensed vehicle.

California's definition draws two lines, speed and watts. California Vehicle Code § 312.5(a), read September 25, 2026, defines an electric bicycle as one "equipped with fully operable pedals and an electric motor that does not exceed 750 watts of power".

A class 2 bike's throttle motor "is not capable of providing assistance when the bicycle reaches the speed of 20 miles per hour", and a class 3 assists "only when the rider is pedaling" and "ceases to provide assistance when the bicycle reaches the speed of 28 miles per hour".

The federal definition, at 15 U.S.C. § 2085(b), is "a two- or three-wheeled 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."

Read from § 312.5(a)(2) and (a)(3) and Freesky's product page, September 25, 2026.

The watt line is the question to ask us. Freesky's page gives the motors as "2000W + 2000W Brushless Peak Motor", a peak figure for each. California's line reads "does not exceed 750 watts of power" and the federal line "less than 750 watts", and neither text says whether it means peak or continuous output.

If the watt line decides where you can ride, email us and we will ask Freesky for the Turbo's continuous rating in writing before you order.

Your own state's definition is in our 50-state e-bike law atlas, and California's in full on our California page.

Where you can ride it

Off pavement, the land manager decides where the Turbo may ride, and on federal land the answer starts with the class, so the 20 mph setting and the watt line above both matter here.

On National Forest land the Forest Service's final e-bike directives, issued March 31, 2022, "provide for managing all classes of e-bikes as motor vehicles and require local-level decision-making and environmental analysis to allow use of e-bikes on non-motorized trails", in the words of its own notice, 87 FR 41278.

Once a Ranger District publishes its motor vehicle use map, 36 CFR 261.13 prohibits operating a motor vehicle there "other than in accordance with those designations".

On Bureau of Land Management land, 43 CFR 8340.0-5 defines an e-bike with "an electric motor of not more than 750 watts (1 h.p.)" in the same three classes, and treats one like a non-motorized bicycle only where "the authorized officer has expressly determined" it should.

Four owners, four different documents, and none of them is the bike's spec sheet.

Getting it wrong on a National Forest has a price: 36 CFR 261.1b sets the punishment for breaking a prohibition in that part at "imprisonment of not more than six months or a fine in accordance with the applicable provisions of 18 U.S.C. 3571 or both". Our guide to e-bike rules on public land walks through each federal agency.

Green flags / Red flags

Green flags

• Two driven wheels, a hub motor front and rear at 105 N·m each, for the loose ground where one driven wheel slips.
• Both motors or one, your choice: on flat pavement at 10 to 20 mph the two modes land within 3% on the throttle, and climbing 4 to 8% grades two motors use 18 to 27% less battery.
• Four-piston hydraulic brakes with 180 mm rotors, front and rear.
• Full suspension: a 120 mm oil-sprung fork with preload and lockout, and a coil rear shock.
• A 1,200 Wh removable battery that charges on or off the bike.
• UL 2849 and UL 2271 certificates Freesky publishes and links, naming the M-410 and its battery.
• A 5'3" to 6'8" rider range on one frame, with the rack and fenders in the box.
• Price parity with Freesky: $1,299 on both stores on September 25, 2026, in all four colorways.

Red flags

The red flags are about fit: who this bike is wrong for, and what to read instead.

• Wrong if you have to carry it often. At 99 lb, stairs and car racks can take two people; email us your stairs or your rack and we will point you to a lighter bike on our shelf.
• Wrong as a flat-city commuter. Freesky's own guide says one motor is "often more than sufficient" for flat commuting; our hub-drive picks match one-motor bikes to that ride.
• Wrong for a rider under 18. Freesky's manual sets the minimum age at 18; our 50-state law atlas has each state's age rules, and we will suggest a bike a teen may ride.
• Wrong if swinging a leg over a frame is hard. The standover is 28.0 inches; tell us your inseam and we will find you a lower frame on our shelf.
• Wrong if you want to ride above 20 mph on public roads without a license. Freesky's own FAQ says that takes a license, plates and insurance; email us and we will match you to a bike built to your state's class limits.
• Wrong if you want assist that follows how hard you push. The Turbo's cadence sensor responds to the cranks turning; our e-bike motor guide explains the two sensors, and we will point you to a torque-sensing bike.
• Wrong if your trails admit Class 1 only. The thumb throttle puts it outside that permission; our public-land guide shows how each agency writes it, and we will check your trail with you.

Buy it if / Buy something else if

Buy it if you ride loose ground, sand, snow, fire roads or your own land; you want two driven wheels and a choice of one or both; you are between 5'3" and 6'8" and over 18; and you have somewhere to keep a 99 lb bike charged at 50 to 77 °F.

At $1,299 you get two hub motors, full suspension, four-piston hydraulic brakes, a 1,200 Wh removable battery and a rack and fenders in the box. Our listing's Shop Pay sample plan is $117.25 a month for 12 months at 15% APR, $1,407.00 in total, subject to an eligibility check.

Buy something else if your riding is flat pavement and short trips, where Freesky itself says one motor is often enough and our hub-drive picks match one motor to the ride; or if your trails admit Class 1 bikes only, in which case email us the trail system and we will match you to a bike its rule allows. Every bike we have reviewed is in our e-bike reviews hub.

Before you buy: the checklist

Eight things to settle before you spend $1,299. The first two decide whether this is your bike at all.

1. Read the rule where you will ride: your state's e-bike definition for roads and paths, and the land manager's for trails.
2. Check the rider's age. Freesky's manual sets the minimum at 18.
3. Ask us for the continuous motor rating if a watt line decides where you ride.
4. Measure your inseam against the 28.0-inch standover, and your height against 5'3" to 6'8".
5. Weigh yourself with your gear and add the 99 lb bike against the 400 lb capacity.
6. Plan the lift: where the bike lives, and how 99 lb gets onto a rack or up a step.
7. Find your ride in the range tables and plan with 80% of it, running both motors on hills.
8. Pick a charging spot that stays dry and between 50 and 77 °F, as Freesky's manual asks.

Buying it from us

Why buy the Eurostar Turbo from Redtail

You pay Freesky's own number. Our $1,299 is the list price on Freesky's page when we read both on September 25, 2026. What we add starts when the carton ships.

Change of mind is separate from all of the above: a bike that is unopened and in its factory-sealed packaging, requested within 72 hours of delivery, carries a 15% restocking fee plus return shipping, and a canceled order a 3% transaction fee. That is why we would rather answer your fit and trail questions before you order.

Black, with blue graphics. All four colorways could be ordered on our store on September 25, 2026.

Green, with yellow graphics.

Gray, with red graphics.

Orange, with gray graphics.

Frequently asked questions

How far can the Freesky Eurostar Turbo go on one charge?

Freesky publishes 60 to 105 miles on one motor and 40 to 70 on two. Computed by Redtail eBikes for a 180 lb rider on flat pavement on both motors, it goes about 67 miles at 15 mph on the throttle, 49 at 20 and 101 pedaling easily at 15. Every 1,000 feet of climbing costs 166 to 217 Wh more, and cold takes more again: find your ride in the range tables.

Can you use only one motor on the Eurostar Turbo?

Yes. Freesky publishes a separate range for one motor, and its manual suggests "using rear-wheel drive only" for a first ride on flat ground. One motor suits gentle flat riding; run both on climbs and loose ground (the one-or-two table).

Does running both motors drain the battery faster?

Not on the throttle on flat pavement: in Redtail eBikes' range model the two modes land within 3% of each other from 10 to 20 mph, and two motors use less above that. Pedaling gently at 12 mph, two motors use 18% more (7.5 Wh a mile against 6.4). On a climb they use less: 27% less up an 8% grade at 10 mph on the throttle.

How fast does the Freesky Eurostar Turbo go?

Freesky's page publishes 34 mph on throttle or pedal assist, and its FAQ says every Freesky e-bike is limited to 20 mph by default. Going faster than 20 mph, in Freesky's words, takes "a license, license plates, and insurance".

Is the Eurostar Turbo street legal, and what class is it?

As delivered, its throttle and assist stop at 20 mph, the speed where California's class 2 throttle must stop; each definition also draws a 750 W line, and Freesky's page gives peak motor figures, so ask us for the continuous rating in writing. At the 34 mph Freesky publishes it is past every class's speed line, and Freesky's own FAQ calls for a license, plates and insurance. Check your state in our law atlas.

How do I unlock the 20 mph limit on a Freesky?

Freesky's answer is about paperwork, and so is ours: its FAQ says exceeding 20 mph needs "a license, license plates, and insurance". Our terms warn that modifying a bike's controller or speed limiter "may make it unsafe" and void the manufacturer's warranty, so talk to us before you change any setting.

How much does the Eurostar Turbo weigh?

99 lb, Freesky's published figure for every colorway. Add yourself and everything you carry for the weight the range tables work with.

What is the Eurostar Turbo's weight limit?

Freesky gives a 400 lb load capacity. Keep yourself and your gear to 300 lb and you are inside it even with the bike's 99 lb counted.

What size rider does it fit?

Freesky publishes 5'3" to 6'8" and an inseam of 27 to 35 inches on one frame, with a 28.0-inch standover and a seat height of 33.9 to 41.3 inches.

How do I turn on a Freesky e-bike, and what is the password?

Press the switch on the battery first. Then, per Freesky's manual, "use NFC to swipe the screen, or hold the power button and then enter the password: 1212". Start in assist level 0 or 1.

Is the Eurostar Turbo UL certified?

Yes. Freesky links a TÜV SÜD America UL 2849 certificate for the electrical system that lists model M-410, and a UL 2271 certificate for its FP4825R0 battery.

How long does the Eurostar Turbo's battery last?

On a charge, about 49 miles at 20 mph on the throttle to 101 at 15 mph pedaling easily, for a 180 lb rider on flat pavement on both motors; faster riding and climbing cost more (the range tables). To recharge, Freesky's comparison chart gives 6 to 8 hours on the 3 A charger. Freesky's charging guide suggests charging to 80–90% when you do not need the full range, to reduce stress on the cells.

Can you ride the Eurostar Turbo in winter?

Down to 32 °F: Freesky's manual says the bike is not meant to be used, stored or charged below that. Expect less range as it cools; the 15 mph easy-pedaling ride that goes 101 miles at 77 °F goes about 77 at 32 °F (the cold table). The manual also asks you to dry the bike right after riding in rain or snow.

Where are Freesky e-bikes made?

Both of the Turbo's UL certificates are held by GuangZhou Yansan Science & Technology Co., Ltd., in Guangzhou, China (UL 2849, UL 2271).

What warranty does the Eurostar Turbo have?

Bought from us, a bike that will not power on or charge, shows an error code or has a faulty part is covered under the manufacturer's warranty, and we coordinate the repair or replacement with Freesky. For bikes bought on its own website, Freesky's page lists 24 months on the motor, battery and controller and 12 on other parts; ask us for the terms on your order in writing before you pay.

Are Freesky parts available in the US?

Yes: we carry Freesky replacement parts in our Freesky parts collection, including motors, brakes, battery packs and a rear-rack kit. Email us your order number and we will confirm a part fits your Turbo before you buy it.

Is a dual-motor e-bike worth it?

For climbs and loose ground, the numbers say yes: in Redtail eBikes' range model two motors use 18 to 27% less battery than one on 4 to 8% grades, and they hold 20 mph up a 14.8% grade where one motor manages 5.6%. For flat, short rides, Freesky's own guide says one motor is "often more than sufficient".

Is Freesky a good e-bike brand?

Judge it on the record: Freesky publishes UL 2849 and UL 2271 certificates for this bike, no CPSC recall record names it as of September 25, 2026, and it prints the figures this review computes from. The verdict says who the Turbo suits.

Limitations of this review

Fifteen things this review cannot settle, set out so you can weigh them yourself.

1. We sell this bike. Read the red flags as carefully as the green.
2. This is a specification-verified review. Every figure comes from Freesky's published documents, a certificate, a statute, our own store record, the published research the range section cites, or arithmetic shown on this page.
3. Every range figure is computed for a steady ride: a held speed on a constant grade, no wind and no stops. Starting, stopping and headwinds cost more, a tailwind less.
4. The motors are modeled from a comparable. Freesky's page gives peak output and 105 N·m per motor; the model uses Bafang's published figures for a 48 V geared hub motor chosen because its speeds match Freesky's 34 mph on Freesky's 27.6-inch wheel; Bafang prints its n0 and nT without defining them, and the model reads them as the speed with no load and at rated power. At 82% efficiency in place of Bafang's 80% floor, the 15 mph throttle figure rises from 67 miles to 74; on Bafang's 750 W version of the same motor it is 68.
5. The motor model is not checked against a measured hub-motor map. Its physics reproduces Martin and colleagues' published worked example, and the motor model reproduces Bafang's 80% at the rated point, but no independent efficiency measurement of a hub motor could be reached for this review.
6. The model splits the push evenly between the two motors in two-motor mode and lets the front hub freewheel in one-motor mode, as a geared hub's clutch does. Freesky's page calls the motors hub motors without saying geared or direct drive, and none of the Freesky documents read for this review says how its controller shares torque.
7. The battery is taken at Freesky's 1,200 Wh. Its UL 2271 certificate rates the pack at 47.19 V and 24.5 Ah, 1,156 Wh, which would lower every range figure by 3.7%. The Freesky documents read for this review do not say how much of the pack the battery management system releases; on one measured pedelec, researchers at KIT found 75% used in a standard range test.
8. The tire figure is a median of other fat tires. Freesky's page names no tread for the 26 × 4" tires, so the model uses the median of ten measured at 12 psi on a drum, softer than Freesky's 16–20 psi; the tire table brackets it with the lowest and highest of the ten.
9. The cold figures rest on one cell's lab data. Freesky's page and the pack's certificate name no cell for this pack, so the central line uses McMaster University's measured LG HG2 cell, with brackets from other published cell data, and assumes the cells sit at the air temperature.
10. The wheel's size comes from one source: Freesky's 27.6-inch wheel diameter. A different rolling diameter would move every speed in the motor model a little.
11. Freesky's documents give more than one figure for some parts. The fork is listed at 120 mm on the product page, while the manual's fork section says it moves "up to 80mm"; the motors are "2000W + 2000W" peak and 210 N·m on the product page, 3,500 W peak and 200 Nm in the July launch post, and 105 N·m per motor on the page against 100 N·m per motor in Freesky's August torque guide. This review uses the product page throughout, no range figure depends on these rows, and we will get the fitted figures in writing for you on request.
12. Trail access is local. Nothing here replaces your own land manager's rule, which can change and differs between neighboring systems.
13. The recall search covers the CPSC's US recall database and the names searched; a recall issued under another company name would need that name.
14. Availability and price were read on September 25, 2026, and both move.
15. Freesky's warranty terms are its own. Its page lists 24 and 12 months for bikes bought on freeskycycle.com; the terms on an order from us are what our refund policy and the manufacturer provide, and we will put them in writing for you before you pay.

The bottom line

At $1,299, the Eurostar Turbo puts a hub motor in each wheel of a full-suspension fat-tire bike, with four-piston hydraulic brakes, a 1,200 Wh removable battery, and a rack and fenders in the box. On flat pavement a 180 lb rider gets about 67 miles at 15 mph on the throttle; on a climb, running both motors saves 18 to 27% of the battery per mile.

It is a bike for loose ground and your own land, for riders 18 and over between 5'3" and 6'8" who can live with 99 lb. Our listing's Shop Pay sample plan is $117.25 a month for 12 months at 15% APR, $1,407.00 in total, subject to an eligibility check.

Settle the class before you pay: 20 mph as delivered, 34 mph published, and a license, plates and insurance by Freesky's own account for anything past 20. Email us before you order with where you will ride, and we will get Freesky's continuous motor rating in writing if the watt line matters there.

Source register

Every document this review rests on, with the claims each one carries.

T1 is the record itself, read from the party that issued it: a statute, a federal regulation or notice, a certificate, the maker's own product page, record and manual, our own store record. T2 is a party's own publication about its product or its measurement: the maker's guides and posts, the motor maker's workbook, and the research groups' and laboratories' published measurements.

Expiry conditions

This page should be re-read if Freesky changes the price (its launch post names $1,399 as the regular retail price), the specification, the range bands or the 20 mph default on its product page; if Freesky answers our written questions on the continuous motor rating or the fitted fork; if the stock, price or Shop Pay terms change on our store.

It should also be re-read if either certificate is revised; or if a recall is published naming Freesky or GuangZhou Yansan. Verified September 25, 2026.

References

The full bibliographic record for every document cited above, each with the date it was retrieved.

1. FREESKY, Eurostar Turbo M-410 — product page (Technical Specification, Size & Fit, comparison chart, FAQ, warranty and safety notice, as rendered). Retrieved September 25, 2026. https://www.freeskycycle.com/products/eurostar-turbo-m-410
2. FREESKY, Eurostar Turbo M-410 — product record, body_html Key Features and per-variant price and weight. Retrieved September 25, 2026. https://www.freeskycycle.com/products/eurostar-turbo-m-410.json
3. FREESKY, Eurostar Turbo user manual (PDF linked from the product page): Recommended Rider Size, Start-Up Procedure, Suspension Fork Adjustment, tire inflation, safety instructions, maintenance table, Bike Performance Disclaimer. Retrieved September 25, 2026. https://cdn.shopify.com/s/files/1/0605/5188/9131/files/FREESKY-EUROSTAR-TURBO-USER-MANUALpdf.pdf?v=1784893089
4. TÜV SÜD America, Inc., Certificate No. U14 128702 0008 Rev. 00, Electrical Systems for E-Bikes, UL 2849:2020/R:2022-12 and CAN/UL 2849:2022, test report 64171250608601, dated July 31, 2025. Retrieved September 25, 2026. https://cdn.shopify.com/s/files/1/0605/5188/9131/files/UL2849-Eurostar-Ultra-M410.pdf?v=1768562114
5. TÜV SÜD America, Inc., Certificate No. U10 128702 0003 Rev. 00, Batteries (Rechargeable Li-ion Battery), UL 2271:2018 and CAN/UL 2271:2018, model FP4825R0, test report 6828224084501, dated April 3, 2025. Retrieved September 25, 2026. https://cdn.shopify.com/s/files/1/0605/5188/9131/files/UL2271-Eurostar-Ultra-M410-25Ah.pdf?v=1768803906
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13. Redtail eBikes, Shipping policy. Retrieved September 25, 2026. https://redtailebikes.com/policies/shipping-policy
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15. Redtail eBikes, Terms of service, "Assumption of risk" and "Warranty". Retrieved September 25, 2026. https://redtailebikes.com/policies/terms-of-service
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36. NOAA, NASA and US Air Force, U.S. Standard Atmosphere, 1976 (NOAA-S/T 76-1562), sea-level pressure and the gas constant for dry air. Retrieved September 23, 2026. https://ntrs.nasa.gov/api/citations/19770009539/downloads/19770009539.pdf
37. FREESKY, E-Bike Torque Explained: What It Means and How Much Torque Do You Actually Need? (August 14, 2026), model torque table. Retrieved September 25, 2026. https://www.freeskycycle.com/blogs/news/e-bike-torque-explained-how-much-torque-do-you-need
38. Redtail eBikes, Eurostar Turbo M-410 range model, the computation set out in the range section of this review, every input and its source in its inputs table; run September 25, 2026. https://redtailebikes.com/blogs/journal/freesky-eurostar-turbo-m-410-review#range