Immediate responsiveness
CX Race responds instantly to changes in pace—ideal for the most technical sections and sudden ramps.
Stress test on climbs and descents: responsiveness, reliability and weaknesses of the Bosch CX Race motor put to the test by pro riders on 2025 eMTBs.
A real-world analysis for those who want the most from every trail.
CX Race responds instantly to changes in pace—ideal for the most technical sections and sudden ramps.
Even after long sections under load, the motor maintains stable temperatures and consistent performance.
Real-world testing over hundreds of kilometres: excellent durability, but watch for early signs of noise under extreme conditions.
Some vibration under high load, torque sensor needs monitoring, and increased noise at the end of descents compared to the standard CX.
| Parameter | CX Race | CX Gen4 | SX | Pro rider test notes |
|---|---|---|---|---|
| Maximum torque | 85 Nm | 85 Nm | 55 Nm | Stable power even on long steep climbs |
| Responsiveness | Extreme | Very high | Medium | Instant response with Trail+/Turbo |
| Heat management | Excellent | Good | Very good | No power drop at 35°C ambient temperature |
| Reliability after 100km | Excellent | Excellent | Fair | Noise increased on CX Race after 80km stress |
*Real data from Whistle pro riders, Bosch testing and EMTB Mag 2025 magazine comparisons.
Professional rider preferences: how to set up CX Race on race trails to win without power loss or consumption issues.
Discover the secretsHow to adjust CX Race settings based on trail type, so you can ride every corner safely and with confidence.
Read the articlePractical guide to the most reported faults by testers and how to solve or prevent them on your most extreme rides.
Quick guideAll the tips to prolong the life of your CX Race after tough events: cleaning, sensors and drivetrain checks.
How to do itHow to avoid running out of energy in the longest marathons: strategies and pro rider tips.
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