e*thirteen Helix Core e*spec Cranks for ISIS Spindle - 155mm, 21.5mm Offset, Black

The ethirteen Helix Core espec Cranks offer high-end drivetrain integrity and a premium look at an exceptional value. Forged from tough 6066-T6 aluminum, these ultra-short 155mm crank arms are optimized to maximize ground clearance on modern low-BB e-MTBs, effectively eliminating pedal strikes. Featuring a 21.5mm offset for a compact, tailored Q-factor on standard ISIS spindle motors, they come complete with an alloy self-extractor system, steel pedal washers, and molded impact boots.