e*thirteen Helix e*spec Crank Arm Set - 165mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black Cartridge Bearings Cannot be used to retrofit

Cannot be used to retrofit a PBR cartridge without modifying the cartridge first

(1) 90 degree L-bend tips

125452-Q0-L

174845-Q0-L

156416-Q0-L

e*thirteen Helix e*spec Crank Arm Set - 165mm, BOSCH Gen4-Brose S Mag-TQ HPR50, with Self Extractor, Black Cartridge Bearings Cannot be used to retrofitHelix 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