The Race Face Aeffect E-Bike Crankarms 170mm Black are engineered specifically for the growing e-Bike market, offering a robust upgrade for discerning riders. Crafted from durable 6066 T6 aluminum, these crankarms feature an optimized Q-factor and an extended spline interface to accommodate Bosch Gen2 and 4 e-Bike motors. Weighing just 499 grams, they are designed for various riding styles, including XC, trail, all-mountain, and enduro, ensuring both performance and reliability on the trail.