26mm offset cranks are compatible with Bosch CX Gen4/Gen5 motor frames, but will fit on all ISIS spindle motors. An economic e-bike crankset upgrade with all the features and great looks you'd expect from higher priced models. eMTB preferred shorter 155/160/165/170mm lengths options. Forged AL-6066-T6 durability and strength with light weight. Self-extracting crank bolts for ease of installation and service. Steel pedal washers & molded crank boots. Helix Core e*spec
Crank
155mm
Compatible with BOSCH Gen 4/5 and ISIS Spindle Motors
26mm Offset
w/ Self Extractor
Black Helix Core e*spec cranks deliver an e-bike drivetrain upgrade with high-end integrity and aesthetics at an extreme value. Engineered for e-MTB strength, so you don’t need to worry about pedal strikes or holding back on your next gravity run. Forged 6066-T6 aluminum crank arms keep you confident while the alloy self-extractor system keeps routine service tasks efficient. Added details like steel pedal washers and molded impact boots give this crank all the high-end features a rider hopes for.