E.THIRTEEN E-SPEC HELIX RACE ALLOY e-bike Cranks for Bosch CX Gen4/5 / Brose S Mag Offset 26mm Bronze

The E.THIRTEEN E-SPEC HELIX RACE ALLOY e-bike cranks are a premium aluminium alternative to carbon for e-bikes, offering lightness, robustness and aesthetics without compromise. Forged and then CNC-machined with precision, they combine performance and design, perfect for demanding cyclists looking to optimise their e-bike set-up.

Designed to withstand impacts and pedal strikes, they are available in shorter lengths to improve clearance on frames with a low bottom bracket. The integrated aluminium extraction system makes fitting and maintenance easier. The result: weight savings, improved 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 standard mountain bike, while providing sufficient clearance for the motor and chainstays. Tested to E-Enduro standards, they are ready for the most extreme terrain, with crank guards included for maximum durability.

Ref: 15421627924860