S&S Cycle Pinion Shaft Conversion Package For Harley EVO The Pinion and Oil Pump Gear Kit includes the key components needed to service the oil pump drive on classic Harley and S&S engines. It comes with a 24T drive gear, 6T pinion gear, spacer and pinion shaft nut. Features: Includes 1977-89 pinion gear and 1954-89 pinion shaft oil pump drive gear, pinion shaft gear spacer and pinion shaft gear nut This is required when using an S&S flywheel in stock 1990-99 Evolution cases Made in the USA