Aipas M1 Pro Xterrain ST Ebike vs Kepler 52V Fat Tire E-bike
Buy the Aipas M1 Pro Xterrain ST if you want the lowest price and the most motor for the money: $938.98 at eBay as of November 3, 2026, versus $1,399.00 for the Kepler. Buy the Kepler if you want a lighter, better-finished bike with hydraulic 4-piston brakes, a bigger battery and Apple Find My. The gap is about $460, and the Kepler earns much of it back in brakes, battery capacity and weight.
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Aipas M1 Pro Xterrain ST Ebike
4.8Choose the Aipas M1 Pro Xterrain ST if you want a full-suspension fat-tire e-bike with 1800W and 110 Nm for under $1,000 and can live with mechanical-style disc brakes and a 90 lb bike.
- Full suspension with a locking fork and rear shock soaks up rough ground.
- 1800W motor and 110 Nm make steep hills easy.
- 500 lb max load and a 5'5" to 7'2" height range fit big riders.
- Step-through frame is easy to mount.
- Under $1,000 for a full-suspension fat-tire e-bike.
What separates them
| Aipas M1 Pro Xterrain ST Ebike | Kepler 52V Fat Tire E-bike | |
|---|---|---|
| Price | $938.98 at eBay as of November 3, 2026 | $1,399.00 as of October 31, 2026 |
| Motor | 750W rated, 1800W claimed, 110 Nm, direct-drive hub | 750W nominal, 1,940W peak, 118 Nm, geared hub |
| Battery | 48V 17.5Ah (~840Wh) | 52V 20Ah (~1,040Wh) Samsung 21700 |
| Brakes | 180mm dual disc | 203mm 4-piston hydraulic, front and rear |
| Weight | 90 lb | 73 lb |
| Wheels and tires | 26x4.0 fat tires | 24x4.0 fat tires on the 24-inch size |
| Suspension | Full suspension with locking fork and rear shock | Not listed as full suspension |
Price history
- Aipas M1 Pro Xterrain ST Ebike: lowest $938.97 on Oct 28 at eBay; $938.97 on Nov 3.
- Kepler 52V Fat Tire E-bike: lowest $1,399.00 on Oct 31 at Ariel Rider Ebikes; $1,399.00 on Nov 2.
Prices at every store
Aipas M1 Pro Xterrain ST Ebike
- eBayNew
In stockSold by aipas-official-direct
$938.98Free shippingObserved at 1:06 AM - Avidly OutdoorsyNew
In stock
$1,408.14Free shippingObserved at 1:06 AM
Also available at
- Aipas Bike LLCCheck price at Aipas Bike LLC
- AmazonCheck price at Amazon
- WalmartCheck price at Walmart
Kepler 52V Fat Tire E-bike
- Ariel Rider EbikesCheck price at Ariel Rider Ebikes
- Ariel Rider EbikesCheck price at Ariel Rider Ebikes
Specs compared
| Spec | Aipas M1 Pro Xterrain ST Ebike | Kepler 52V Fat Tire E-bike |
|---|---|---|
| Suspension Type | Full Suspension | Front suspension |
| Frame Material | Aluminum | AL6061 |
| Maximum speed | 28 mph | 28+ Mph (Where legally allowed) |
| Battery capacity | 17.5 Ah | 52V 20Ah (~1,040Wh) |
| Wheel size | 26" | 24-inch |
| Weight | 90 lb | 73 lb |
| Type | Mountain | — |
| Age Group | Adult | — |
| Bicycle type | Mountain Bikes | — |
| Maximum travel distance | 85 mi | — |
What reviewers say
Aipas M1 Pro Xterrain ST Ebike
With a 4.8 average from 1,374 ratings, owners largely report satisfaction, though these are aggregate marketplace ratings rather than detailed test reports.
- Strong climbing assist on hills
- Comfortable ride from full suspension and fat tires
- Stable and easy to mount
- Heavy to handle and store
- Real-world range falls short of the 85-mile claim
Kepler 52V Fat Tire E-bike
Riders rate it 4.9 out of 5 from 600 ratings and praise its power, range and build quality for the price. Complaints are small: a gap between assist levels 2 and 3 and a few minor issues on early rides.
- Powerful, fast and quick-accelerating with strong hill climbing
Questions and answers
- Which is better for commuting?
- The Kepler. It is 17 lb lighter, comes with a rack and fenders, and its hydraulic brakes and Find My suit daily city riding. The Aipas is better on rough trails.
- Which climbs hills better?
- Close. The Aipas claims 110 Nm and the Kepler 118 Nm, so the Kepler has a slight edge, but the Aipas weighs 17 lb more, which offsets some of that.
- Is the Kepler worth the extra $460?
- Yes if you value hydraulic brakes, a 1,040Wh battery, less weight and Find My. No if you want the most motor and suspension for the least money.
- Which lasts longer per charge?
- The Kepler. Its 1,040Wh battery is about 24% larger than the Aipas 840Wh pack, and it is rated for 50-65 miles typical versus an 85-mile best-case claim.
- Which is better for a tall or heavy rider?
- The Aipas. It takes up to 500 lb and fits riders from 5'5" to 7'2". The Kepler caps at 400 lb.
- Do both reach 28 mph?
- Yes, both are rated to 28 mph where legally allowed. Check your state's Class 3 rules before buying either.
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