This is a complete starter Jackshaft kit that includes everything needed to replace the entire stock Jackshaft Assembly. This kit comes WITH the Bolt Lock Plate unlike other kits that will require you to source it separately. Includes 10-Tooth Starter/Pinion Gear, Coupling, Jackshaft Extension, Output Shaft Coupling, Spring, 10-32 Threaded Bolt with Lock Plate & Retaining Clip. The main stressed components are made from high-strength, heat-treated steel. Fits 1994-2006 Harley Big Twin Evolution & Twin Cam Electra Glide, Tour Glide, Street Glide, Road Glide, Road King, Softail, Dyna & FXR Models