The Crower Ultra-Light is Crower's premium crank. Includes all the standard 4340 NT (non-twist forging) features, plus ultra-lightweight profiling, pendulum undercutting, gun drilled mains, four lightening holes and radius edges. Less drag in oil increases horsepower, rapid response throttle. 100% American made. Weight: 36-39 Lbs. (Determined by stroke, rod and main size)