E*THIRTEEN HELIX E*SPEC ALLOY CRANK ARMS FOR BOSCH GEN4/BROSE S MAG exclude_premium_shipping Low profile: For great clearance

Low profile: For great clearance

Smooth and durable power transfer is provided by the two piece "Hollowtech II” bottom bracket system and quick and crisp shifting action is ensured thanks to the “Dyna-Sys” chainrings

They are held by two metal rings and 3 spokes and can easily be shortened to the desired length

Level and S700 disc brake

E*THIRTEEN HELIX E*SPEC ALLOY CRANK ARMS FOR BOSCH GEN4/BROSE S MAG exclude_premium_shipping Low profile: For great clearanceHelix Core e*spec cranks give your e bike an upgrade with high end integrity and aesthetics at a great value. Engineered for e MTB strength, so you dont need to worry about pedal strikes or holding back on your next gravity run. Forged aluminum arms keep you confident on the trail, while alloy self extracting crank bolts mean efficient routine service, and minimum added weight. Added details like pedal washers, molded impact boots, and e rider