Helix E*Spec Crank Options:Helix e*spec Crank Arm Set - 155mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black it does so without any

it does so without any additional weight or finicky contraptions

Powered by Di2 shifting system battery

Includes alloy topbolt

and reduce the chance of injury for every rider with patented technology

fit and protection

Helix E*Spec Crank Options:Helix e*spec Crank Arm Set - 155mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black it does so without anyHelix Core cranks provide an e bike drivetrain upgrade with high end features and aesthetics at an exceptional value. Forged for e Enduro strength, with alloy self extractor bolts, pedal washers, and molded impact boots. 24mm ISIS interface models are compatible with Bosch Gen 4, Brose S Mag, TQ, Fazua, Yamaha, Maxon, and Specialized Brose motor systems. Available in short lengths from 155mm for improved pedal clearance. Forged, CNC Machined AL 6066