925570 Sprocket shaft rotating socket tool

When you are degreeing a cam or checking valve-to-piston clearances, you need a controlled way to turn the engine over. This MCS sprocket shaft rotating socket tool is designed to fit the 10-spline sprocket shafts found on 1955–2006 Big Twin models, excluding the 2006 Dyna. By engaging the splines directly, it allows you to rotate the crankshaft smoothly using a standard 3/4" socket on the hex drive end. Referencing OEM 925570, this tool is a much safer and more precise alternative to trying to turn the engine by the rear wheel or other makeshift methods, making it a staple for any serious engine builder's bench.