e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black Suspension Fork Tuning Kits Manufacturer Part Number: 910-21-291

Manufacturer Part Number: 910-21-291

Manufacturer Part Number: 10682

UPC: 817496010860

UPC: 796941550741

e*thirteen Helix e*spec Crank Arm Set - 170mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black Suspension Fork Tuning Kits Manufacturer Part Number: 910-21-291Helix 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