232189 Retro Fit Starter Motor Pinion Gear

This Rivera Primo retro-fit starter motor pinion gear is a specialized component designed for high-performance Big Twin engines. It allows for the integration of the robust 1990 to 1993 style 66-tooth ring gear with later starter extension assemblies. This configuration is particularly beneficial for large-displacement motors that subject the starting system to intense stress, especially during back-fire events. By utilizing this uniquely engineered pinion gear, riders can enhance the durability of their primary drive and starting mechanism. Note that the pinion gear and starter ring must be ordered separately to complete the installation.