E*THIRTEEN HELIX E*SPEC ALLOY CRANK ARMS FOR BOSCH GEN4/BROSE S MAG exclude_premium_shipping Smooth and durable power transfer

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

The new Mazza 29" 2-ply TLR 2

1 x Shimano CS-HG700 11-speed Cassette 11-34 incl

Available in almost any existing seatpost diameter

Smart Walk Assist

E*THIRTEEN HELIX E*SPEC ALLOY CRANK ARMS FOR BOSCH GEN4/BROSE S MAG exclude_premium_shipping Smooth and durable power transferHelix 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