e*thirteen Helix Race Alloy e*spec Crank Arm Set – BOSCH Gen4-Brose S Mag-TQ HPR50, 26.5mm Offset, 160mm, with Self Online now

A high-performance, weight-optimized alternative to carbon fiber, for riders who prefer alloy cranks. These 24mm ISIS interface cranks are engineered for compatibility with Bosch Gen 4, Brose S Mag, TQ HPR 50, Fazua, Yamaha, Maxon, and Specialized Brose motor systems. They come in short lengths starting at 155mm for improved pedal clearance and are tested to E-Enduro standards.