The Hope E-Bike MTB Crankset 155mm has been specifically designed for the latest breed of mountain e-bikes. This Hope crankset is designed for maximum ground clearance. Hope E-Bike MTB Crankset 155mm Features Forged and CNC machined 7150 series aluminium alloy crank arms Optimised Q-factor for compatibility with most frame/motor combinations *Compatible with motor systems using an ISIS spline axle/crank arm interface Self extracting system for easy fitting and removal Arms available in Black, Blue, Red, Silver, Purple and Orange Length: 155mm  Proudly Designed, Tested and Manufactured in Barnoldswick, UK