8000W Peak Power Dual Motor Electric Bike for Adults
- Electric Bicycle
- 8000 watts
- Front
- Aluminum
- Better rated than 57%
A genuinely powerful dual-motor build with certified battery and brake hardware, but early owner feedback suggests real range falls short of the claimed 100 miles when both motors are engaged.
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How it ranks among the 478 electric bicycles we track
4.5★ across 3 Amazon ratings, Bayesian-smoothed toward the category average.
3 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 478 electric bicycles we track - how the scorecard works · full electric bicycles data report. Confidence: limited - limited rating history.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Tiazhyu C8 is a dual-motor electric bike with a combined 8000W peak output, a 52V 26Ah battery rated near 100 miles, and 26x4-inch fat tires on a 6061 aluminum frame rated to 400 lbs.
Tiazhyu positions the C8 as a high-power option for steep grades and mixed terrain, with the seller specifying a 47 mph top speed carrying a 165 lb rider versus 50 mph unloaded, and 222 Nm of torque for climbing 45-degree slopes. The battery carries IP67 and UL2271 certification, and the frame is built for riders from about 5-foot-2 to 6-foot-8. Buyer feedback so far points to a real-world range gap between single-motor and dual-motor use.
- Dual 4000W motors, 8000W combined peak
- 52V 26Ah battery, up to 100 miles claimed
- 26x4-inch fat tires, 400 lb load rating
- UL2271 battery / UL2849 system certification
What buyers say
From Amazon customer reviews.
Assembly was manageable for most reviewers, though one had to improvise extra leverage to tighten the pedals and ended up breaking a wrench in the process. The biggest complaint was range: one owner got roughly 25 miles on single-motor assist but less than half that using both motors, well under the advertised 100-mile figure, though the seller did send a replacement part. Others found it fast and smooth straight out of the box.
Strengths and trade-offs
Drawn from this product's published specifications.
- Strong torque for steep climbs and load
- UL2271/UL2849 certified battery and system
- 4-piston hydraulic dual disc brakes
- 6 riding modes including single or dual motor
- Real range drops sharply in dual-motor mode
- Assembly hardware reportedly under-torqued from factory
- 400 lb frame rating means a heavier overall bike
Performance notes
Torque and top speed scale with load: Tiazhyu quotes 50 mph unloaded but 47 mph with a 165 lb rider, and the 222 Nm torque figure is what lets it handle 45-degree slopes. One reviewer measured about 25 miles on single-motor assist but under half that running both motors, showing the 100-mile claim depends heavily on which motor mode and terrain are used. The 52V 26Ah battery recharges via 3A fast charging in the stated 5 to 7 hours.
Specifications
| Brand | Tiazhyu |
|---|---|
| Model | C8 |
| Dimensions & fit | |
| Item Weight | 68 pounds |
| Size | Medium |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Age Range Description | Adult |
| Power & efficiency | |
| Wattage | 8000 watts |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Color | black |
| Included components | |
| Included Components | Battery, Charger, Headlight, Power Cable, Pump |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Bike Type | Commuting Bike, Electric Bike |
| Suspension Type | Front |
| Additional Features | Digital Display, Dual Disc Brake, Dual Suspension, Multi-Speed, Rechargeable |
| Brake Style | Disc |
| Specific Uses For Product | Freestyle, Racing, Road, Snow, Trail |
| Style Name | Classic |
| Theme | Sport |
How it compares
This product against the closest alternatives we track in electric bicycles.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| 8000W Peak Power Dual Motor Electric Bike for AdultsThis product | 4.5 / 5 | 3 | 2.7 / 5 |
| Wooken Electric Bike for Adults with 500W MotorWooken | 4.4 / 5 | 312 | 4.1 / 5 |
| TotGuard Electric BikeTotGuard | 4.4 / 5 | 286 | 4.1 / 5 |
| ANCHEER 14" Folding Electric Bike for TeensAncheer | 4.2 / 5 | 329 | 4.0 / 5 |
| Gotrax 16" Folding Electric BikeBrand | 4.4 / 5 | 555 | 4.0 / 5 |
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Questions about the Tiazhyu C8
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How much torque does the Tiazhyu C8 dual motor produce?
The listing specifies 222 Nm of torque, with a top speed of 50 mph unloaded and 47 mph carrying a 165 lb rider.
Does the Tiazhyu C8 really get 100 miles per charge?
That figure is the maximum claim; a reviewer reported closer to 25 miles on single-motor assist and less than half that running both motors together.
What certifications does the Tiazhyu C8 battery carry?
Tiazhyu lists IP67 water and dust protection along with UL2271 (battery) and UL2849 (e-bike system) certification.