580020 George''s Garage, primary drive locking tool

Locking down the primary drive is essential when you need to break loose or torque down the sprocket and clutch nuts. This George's Garage primary drive locking tool is made from high-strength POM polymer, which is tough enough to hold the load but won't mar or damage your teeth like a steel bar might. It sits securely between the primary chain and the front motor sprocket to stop everything from spinning. This versatile tool, which corresponds to OEM number 41214, fits 1936 to 2006 4 and 5-speed Big Twins, 1957 to 2020 XL Sportster models, and 1987 to 2010 Buell models. It is a simple, effective way to work safely on your drivetrain.