Responsiveness uphill
A lighter motor increases the bike's responsiveness on ramps and technical pace changes.
Updated table and in-depth analysis of all Bosch 2025 motor real weights.
Informed choices for trail, marathon and urban.
A lighter motor increases the bike's responsiveness on ramps and technical pace changes.
Less weight at the front means greater control on descents and tight corners.
A lighter motor uses less energy, especially in Eco and Trail mode, increasing your achievable kilometres.
Every gram matters: less weight makes bike transport easier, especially on trains, campers or vans.
| Model | Real weight | Max torque | Nominal power | Ideal use |
|---|---|---|---|---|
| Bosch CX Race | 2.75 kg | 85 Nm | 250 W | XC, marathon, technical trail |
| Bosch CX (Gen4) | 2.9 kg | 85 Nm | 250 W | Performance eMTB, enduro |
| Bosch SX | 2.0 kg | 55 Nm | 250 W | Urban, gravel, light eMTB |
| Yamaha PWseries X3 | 2.75 kg | 85 Nm | 250 W | MTB, e-trekking |
*Source: 2025 data Bosch, Yamaha, Whistle Bikes tests and real laboratory weighing.
Updated table and detailed analysis of all Bosch 2025 motor real weights for informed choices.
Compare nowReal range tests: how far can you go at maximum power? Real figures, tips to increase life with 800 Wh batteries.
Read the testStep-by-step guide to calibrating the Bosch Performance CX speed sensor: steps and precautions for accurate readings.
TutorialA real-world comparison of feeling and responsiveness: CX delivers a more muscular thrust, SX impresses with its naturalness.
Learn more
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