Pinion Shaft Gear Kit for 1939–'53 Big Twins

These pinion shaft gear kits contains all the components needed to be installed on the pinion shaft for the specified year group. They are primarily intended for scratch builders and for major overhauls of existing engines. Kits for 1939–'53 and 1954–'77 can be used in 1972 and earlier engines to speed up the oil pump by 25% for more potential oil volume, since S&S oil pump drive gears are of the 1973 and later 6-tooth design. All of these pinion shaft gear kits must be used with a 24-tooth 1973–'99 style oil pump drive gear. Choose Color/Size.

NOTE: All S&S Pinion Shaft Gear Kits must be used with 1973–'99 style 24-tooth oil pump drive shaft gear such as S&S part #33-4230.