Power and Performance
Bosch CX and SX motors deliver immediate power and optimised torque for every discipline.
All about Bosch CX Race, SX, Smart System: 2025 news, 800 Wh battery upgrade, troubleshooting.
Technical and information section for retailers and specialised workshops.
Bosch CX and SX motors deliver immediate power and optimised torque for every discipline.
Connectivity, real-time diagnostics and firmware updates via the integrated Flow App.
Certified components and IPX5 water resistance for long-lasting durability.
Informative support and technical updates for dealers and workshops.
| Model | Nominal Power | Max Torque | Weight | Average Range* | Intended Use |
|---|---|---|---|---|---|
| Bosch CX (Smart System) | 250 W | 85 Nm | 2.9 kg | 85–140 km | MTB, trekking, high-performance e‑MTB |
| Bosch SX | 250 W | 55 Nm | 2.0 kg | 75–120 km | Urban, gravel, light eMTB |
| Yamaha PWseries X3 | 250 W | 85 Nm | 2.75 kg | 80–135 km | MTB, e‑trekking |
*Data varies depending on battery, terrain and bike setup. Always consult the manufacturer.
Objective analysis of feel and responsiveness: CX is characterised by punchy acceleration, SX by smooth and natural delivery. Compare the data to choose the best system for your needs.
Find out moreFrom error 500 to uphill vibrations: the quickest and safest solutions for common faults on Bosch CX fourth generation.
Quick GuideEverything about the latest 2024 releases: new features, how to update safely, version differences and risks to avoid.
How toCleaning, lubrication and bearing replacement: the step-by-step guide to prolong your Bosch SX motor's life, even with no experience.
See the guideReal range tests: how far can you go pushing always at full power? Real numbers, tips to increase battery life with 800 Wh packs.
Read the testTechnical settings (power, responsiveness, levels) to optimise performance and control on the most demanding trails.
Discover the settingsStress test on climbs and descents: analysis of the CX Race’s responsiveness and reliability, with evaluations by independent testers.
See the reviewStep-by-step procedure to calibrate the Bosch Performance CX speed sensor: steps and tips for accurate readings.
TutorialUpdated table and in-depth analysis of actual weights for all Bosch motors 2025 for informed choices.
Compare nowPractical guide: how to identify the source of noises and what you can do yourself for a quieter motor.
Quick fixes
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