580040 George''s Garage, primary drive lock tool

Working on older Big Twins requires tools that match the specific geometry of those classic primary drives. This George's Garage primary drive lock tool is engineered to lock the motor sprocket and clutch basket together, allowing for the easy removal and installation of the main nuts. It provides a secure lockup so you can hit your torque specs without the assembly rotating. This tool covers a wide range of vintage and classic Harleys, fitting 1936–1986 4-speed Big Twins, 1986–2006 Softails, and 1991–2005 Dyna models. It is a heavy-duty tool that belongs on the bench of anyone maintaining or restoring these legendary machines.