If S&S or other aftermarket cams are to be installed in stock 2000-up Harley-Davidson Sportster or Buell models with stock flywheels, a 1991-'99 style pinion gear must be installed. The stock 2000-up pinion gears are not compatible with the S&S cams due to a change in the stock gear profile in the 2000 model year. These pinion gears are also useful for stock replacement in 1991-'99 engines. White color code pinion gears measure 1.2746"-1.2749" over .108" pins. S&S Part #: 33-4164

Cross-Reference: The following OEM numbers are provided for reference only and may not be completely accurate.
Harley OEM Cross Reference Numbers:
24058-91