The FREESKY Eurostar Ultra M-410 is a full-suspension, fat-tire electric mountain bike aimed at riders who want serious speed, real hill-climbing power, and big-bike stability without spending premium-brand money.
With a 2000W peak rear hub motor, 48V 25Ah battery, full suspension, and a claimed 37 mph top speed with pedal assist, this is not a mild commuter—it’s a powerful all-terrain e-MTB that blurs the line between bicycle and light electric moto.
This review walks through the Eurostar Ultra’s performance, comfort, range, sizing, and best-fit rider, so you can decide if this powerful fat-tire platform is right for your terrain and riding style.
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👉 Check current price, specs, and availability for the FREESKY Eurostar Ultra M-410 here.
TL;DR – FREESKY Eurostar Ultra M-410 at a Glance
If you just want the quick story: the Eurostar Ultra M-410 is a full-suspension 2000W fat-tire e-MTB with a big 48V 25Ah battery, serious hill-climbing power, and UL-certified safety. It’s built for riders who want a fast, stable all-terrain machine rather than a light city commuter.
| Category | Details |
|---|---|
| Bike type | Full-suspension fat-tire electric mountain bike |
| Motor | 2000W peak rear hub motor, 130 Nm claimed torque |
| Battery | 48V 25Ah lithium pack (≈1200Wh) |
| Claimed range | 45–90 miles per charge (PAS) |
| Realistic range | ≈30–65+ miles, depending on terrain and speed |
| Top speed (PAS) | Up to 37 mph |
| Top speed (throttle) | Up to 20 mph |
| Bike weight | ~77 lb (claimed) |
| Max load | 400 lb |
| Tires | 26″ x 4.0″ fat tires |
| Brakes | 4-piston hydraulic disc brakes with 180 mm rotors |
| Suspension | Downhill-style front fork + rear shock (full suspension) |
| Fit window | Recommended for riders 5’3″–6’3″ |
| Safety focus | UL 2849 ebike system, UL 2271 battery (per FREESKY) |
| Best for | Riders who want big power, long range, and all-terrain stability rather than a lightweight city commuter |
👉 See the latest photos and full spec sheet for the Eurostar Ultra M-410.
Key Specs & Sizing (At a Glance)
Core Specs
| Spec | Eurostar Ultra M-410 Details |
|---|---|
| Motor | 2000W peak brushless rear hub motor |
| Battery | 48V 25Ah lithium battery |
| Controller | 48V / 30A |
| Top speed (PAS) | 37 mph (system capable) |
| Top speed (throttle) | 20 mph (brand spec) |
| Claimed range (PAS) | 45–90 miles per charge |
| PAS levels | 0–5 |
| Drivetrain | Shimano 7-speed |
| Brakes | 4-piston hydraulic disc brakes, 180 mm rotors |
| Tires | 26″ x 4.0″ fat tires |
| Frame material | Upgraded 6061 aluminum |
| Bike weight | 77 lb (claimed) |
| Max load | 400 lb |
Geometry (Reference Data)
| Measurement | Eurostar Ultra M-410 |
|---|---|
| Recommended rider height | 5’3″–6’3″ |
| Total length | 77.9″ |
| Wheelbase | 49.6″ |
| Total height | 43″ |
| Seat height (min–max) | 33.9″–41.5″ |
| Reach | 23.3″ |
| Wheel diameter | 29″ (26″ rim with 4″ tires) |
| Standover height | 30″ |
This is a long, substantial bike. If you’re shorter than about 5’3″, or used to compact city bikes, the Eurostar Ultra may feel big and heavy in tight spaces.
Motor, Speed & Power Delivery
The Eurostar Ultra M-410 is built around a 2000W peak rear hub motor with a claimed 130 Nm of torque. In practice, that translates into:
- Quick acceleration on pavement and hardpack
- Enough grunt to pull heavier riders and loads
- The torque you need to climb steep hills that overwhelm typical 750W hub-motor bikes
FREESKY lists:
- Top speed with pedal assist: up to 37 mph
- Top speed with throttle: up to 20 mph
This puts the Eurostar Ultra well beyond a typical 750W / 28 mph Class 3 commuter. In many areas, that means treating it as an off-road or private-property machine at full power and keeping speeds appropriate to local e-bike rules when you’re on public roads or paths.
For riders on rural roads, open paths, or private land, the extra power and speed are a key part of the appeal.
Battery & Range: 48V 25Ah Long-Range Pack
The Eurostar Ultra uses a 48V 25Ah lithium battery, which works out to about 1200Wh of capacity (48 × 25). FREESKY claims a PAS range of 45–90 miles, depending on mode and conditions.
Some marketing language mentions higher “up to” ranges in certain ideal scenarios, but the current tech spec centers on 48V 25Ah and 45–90 miles, which is the benchmark you should use when comparing bikes.
Real-World Planning Numbers
Exact range depends on rider weight, terrain, temperature, wind, and speed, but most riders can expect roughly:
- 30–45 miles
Heavy rider, lots of throttle use, mixed hills, higher speeds - 45–65 miles
Average-weight rider using PAS 3–4, mixed terrain, moderate speeds - 65+ miles
Lighter rider, lower PAS, mostly flat routes at moderate speeds
If you routinely ride fast and climb a lot, plan around the lower half of the claimed range. The upside is that the 25Ah pack still gives you more buffer than many similarly priced fat-tire e-MTBs.
Brakes, Safety & Certification
With this much power and weight, brakes and safety matter as much as the motor.
Braking Setup
- 4-piston hydraulic disc brakes
- 180 mm rotors
Compared with basic 2-piston or mechanical setups, the 4-piston system offers stronger, more controlled stopping, especially for:
- Heavier riders
- Long descents
- Loose or wet terrain
Safety Certifications
FREESKY calls out:
- UL 2849 e-bike system certification
- UL 2271 battery certification
Together, these address system and battery safety, which is reassuring when you’re dealing with a high-capacity pack and higher speeds.
Ride Feel, Handling & Terrain
The Eurostar Ultra is tuned for mixed and rough terrain rather than tight, low-speed city weaving.
Where It Shines
- Gravel roads and forest paths
- Light to moderate off-road trails
- Sandy or loose surfaces where 4.0″ fat tires add stability
- Rural and back-road riding where higher PAS speeds are actually useful
The combination of:
- Long wheelbase (77.9″ total length, 49.6″ wheelbase)
- 26″ x 4.0″ fat tires
- Full suspension
means the bike feels planted and stable at speed. It wants open stretches and flowy lines more than slow, stop-and-go urban traffic.
In tight city corridors, crowded multi-use paths, or small apartments, that same long, stable chassis can feel big and cumbersome—worth considering if most of your rides are short urban hops.
Comfort, Fit & Ergonomics
The Eurostar Ultra is a full-suspension fat-tire e-MTB, so comfort comes from both suspension and tire volume, plus a relatively relaxed riding posture.
Comfort Contributors
- Front downhill-style suspension fork to soften front-end hits
- Rear shock to take the edge off bigger bumps and trail chatter
- 26″ x 4.0″ fat tires adding a layer of “air suspension” on rough surfaces
- Upright-ish riding posture, more relaxed than aggressive trail bikes
This isn’t a low-step or compact city frame. With a 30″ standover and minimum seat height of 33.9″, it’s physically tall and feels like a full-size machine rather than a small commuter.
Best Fit Range
FREESKY recommends the Eurostar Ultra M-410 for riders 5’3″ to 6’3″. Within that range:
- Riders closer to 5’3″–5’5″ should pay attention to standover and whether they’re comfortable managing a taller, heavier bike at stops
- Mid-height and taller riders who feel cramped on compact commuters may appreciate the longer reach and more spacious cockpit
If you’re on the shorter end, it’s worth comparing the standover and seat height to a bike you already ride comfortably.
Utility & Everyday Use
Despite the power and off-road focus, the Eurostar Ultra is set up to handle everyday tasks as well as trail days.
Everyday Utility Features
- Rear rack (included on the latest batch) for panniers, baskets, or cargo
- Full-suspension comfort that smooths out rough pavement and broken roads
- High-capacity battery that can cover commuting, errands, and weekend rides on a single charge
- Color LCD display showing PAS level, speed, battery, and trip data
If you commute on rough roads, live in a hilly area, or want one bike that can handle weekday utility and weekend exploring, the Eurostar Ultra has the hardware to do both.
Pros & Cons
Pros
- Powerful 2000W peak motor with strong hill-climbing and acceleration
- High-capacity 48V 25Ah battery for longer rides and less range anxiety
- Full suspension + 4.0″ fat tires for comfort and stability on rough terrain
- 4-piston hydraulic brakes that match the bike’s power and weight
- 400 lb load rating, suitable for bigger riders or rider + cargo
- Rear rack and color display on the latest batch improve everyday usability
- UL 2849 / UL 2271 safety certifications for added peace of mind
Cons
- Around 77 lb, which is heavy to lift, store, or carry up stairs
- More powerful than typical Class 2/3 specs, so high-speed use may not be road-legal everywhere
- Tall frame and 30″ standover can be challenging for shorter riders
- Fat-tire, long-wheelbase design favors open terrain over tight, technical riding
- More bike than necessary if your riding is mostly short, flat city errands
Who the FREESKY Eurostar Ultra M-410 Is Best For
The Eurostar Ultra M-410 is a strong fit if:
- You want a powerful, full-suspension e-MTB that can hit high PAS speeds and climb serious hills
- You’re a heavier rider or routinely carry cargo and don’t want the bike to feel underpowered
- You ride on mixed terrain—gravel, dirt, grass, sand, and rough pavement—and want fat-tire stability
- You prefer a larger, more planted frame over compact, nimble city bikes
- You want more real-world range than typical 15–17Ah commuter e-bikes offer
Who Might Want a Different Bike
You might want to consider other options if:
- You’re shorter than about 5’3″ or have a short inseam and are uncomfortable with a 30″ standover and tall saddle
- You mainly ride short, flat city trips and would benefit more from something lighter and easier to carry or store
- You need to lift your bike regularly (into vehicles, up stairs, onto wall racks)—77 lb is a lot of mass to manage
- You prefer a traditional “bicycle” feel with moderate power and lower top speeds, and don’t need the muscle of a 2000W motor
For those cases, a lighter hardtail, step-through commuter, or 750W mid-range e-bike may be a better everyday match.
Final Thoughts: Is the FREESKY Eurostar Ultra M-410 Worth It?
If you’re looking for a budget-friendly, full-suspension fat-tire e-MTB with big power, long range, and real off-road capability, the FREESKY Eurostar Ultra M-410 is a compelling option.
It’s not the right choice if you need a light, nimble city bike or if your local laws strictly enforce 750W/28 mph e-bike limits. But for riders who:
- Have access to open roads, rural areas, or private land
- Want serious performance without premium-brand prices
- Value range, stability, and braking power
…the Eurostar Ultra delivers a lot of hardware for the money.
If you fit the recommended height range and are comfortable handling a larger, heavier machine, this could be a highly capable “one-bike-quiver” for commuting, exploring, and weekend fun.
