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 9-Tooth Starter/Pinion Gear, Coupling, Jackshaft Extension, Output Shaft Coupling, Spring, Bolt with Lock Plate(s) & Retaining Clip. The main stressed components are made from high-strength, heat-treated steel. Fits 1989-1993 Harley Big Twin Evolution Electra Glide, Tour Glide, Softail, Dyna & FXR Models. 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 9-Tooth Starter/Pinion Gear, Coupling, Jackshaft Extension, Output Shaft Coupling, Spring, Bolt with Lock Plate(s) & Retaining Clip. The main stressed components are made from high-strength, heat-treated steel. Fits 1989-1993 Harley Big Twin Evolution Electra Glide, Tour Glide, Softail, Dyna & FXR Models