S&S Cycle - S&S Performance Parts 2025 L - Volume 67

1936-'84

Phone: 608-627-1497

1 -2017-UP 2 -2007-'17 3 -1999-'06 4 -1984-'99 5 -1936-'84 6 -XL-RA1250 7 -BELTS & GASKETS 8 -TOOLS 9 -WARRANTY 10 -APPENDIX

High quality S&S pinion gears are carefully machined, heat treated and then finish ground

Three distinct year groups, in up to eight different color coded sizes for optimum gear lash, are available for big twin engines S&S color codes match Harley-Davidson® color codes so that replacement is easy Just pick the appropriate color S&S gear that matches the color on the damaged stock gear (see notes)

If the stock gear is unmarked and the size is unknown or you are scratch building an engine and have no gear, we recommend that you order a gear in the middle of the size range These sizes were used more often and should provide adequate gear clearance under most circumstances When in doubt, use a gear from the middle to the small side of the range, because a combination of looser fitting smaller gears is less likely to cause binding and premature wear Consult the chart for the size and appropriate part number required If you wish to achieve optimum cam gear to pinion gear fit, consult your factory service manual for instructions on fitting these gears before making a selection Some sizes, particularly those on and near the ends of each range, are available on a limited basis because they are the extremes

Big Twin Style Pinion Gear Selection Chart 1954–'77 Size / Color Code Part # Biggest / Black 33-4122 USA Biggest / Red 33-4123 USA Average / Blue 33-4124 USA Average / Green 33-4125 USA Smallest / White 33-4126 USA Smallest / Yellow 33-4128 USA 1977–'89* Size / Color Code Part # Biggest / Orange 33-4141 USA Biggest / White 33-4142 USA Biggest / Yellow

Early 1939–’53

Mid 1954–’77

33-4143 USA USA 3

Average / Red

33-4144 USA USA 1

Average / Blue

33-4145 USA

Smallest / Green

33-4146 USA

Smallest / Black 33-4147 USA 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. *Use this kit when installing an S&S flywheel assembly in a 1990–’99 engine.

Late 1977–’99

5-53