Hope E-Bike Crankset Designed For Maximum Ground Clearance E-bikes have become immensely popular with mountain bikers. With the rise of e MTBs comes a new wave of e MTB-specific components that are better suited to higher torque. The Hope E-Bike Crankset is specifically designed for the latest breed of mountain e-bikes. It is designed for maximum ground clearance and comes in a 155mm and 165mm length. It features a self-extracting system for easy fitting and removal, an optimized Q-factor for compatibility for most frame/motor combinations, and is made from forged and CNC-machined 7150 aluminum. Features Compatible with motor systems using an ISIS spline axle/crank arm interface only Forged and CNC-machined 7150-series aluminum alloy crank arms Self-extracting system for easy fitting and removal Available in 155mm and 165mm lengths and is designed for maximum ground clearance SPECIFICATIONSSpeeds11, 12BB Compatibility ISIS Spline Axle/Crank Arm Interface Only Chain Ring N/ACrank Arm Length155mm, 165mm BB Spindle Interface ISIS Spline Axle/Crank Arm Interface Only Chainring Material-Bolt Center Diameter (BCD)-Crank Arm Material7150 Aluminum Chainline-Bottom Bracket Included No Intended Usee MTBWeight472g | Hope Technology | E-Bike Crankset E-Bike Crankset, 155Mm | Aluminum