E.THIRTEEN Crank Arms E-SPEC HELIX RACE ALLOY for Bosch SX / Brose S Mag / TQ HPR50 / DJI Avinox Silver

The E.THIRTEEN Crank Arms E-SPEC HELIX RACE ALLOY are a high-end aluminum alternative to carbon for VAEs, offering lightness, strength and uncompromising aesthetics. Forged then precision CNC-machined, they combine performance and design, perfect for demanding cyclists looking to optimize their E-bike configuration.

Designed to withstand impacts and pedal strokes, they are available in shorter lengths to improve clearance on low-box frames. The integrated aluminum extraction system facilitates assembly and maintenance. The result: weight savings, greater reliability and simplified maintenance.

Compatible with a wide range of motors (Bosch®, Brose®, Yamaha®, Fazua®, Sram®, Specialized® SL...), they retain a feel close to the Q Factor of a conventional MTB, while ensuring sufficient space for the motor and chainstays. Tested to E-Enduro standards, they are ready for the most extreme terrain, with Crank Arms protectors included for maximum durability.

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