S&S Cycle

REPLACEMENT PINION GEARS

FITMENT • 1984–’89 big twins • 1990–'99 engines with S&S flywheel assembly

1984–'89 BIG TWIN STYLE PINION GEAR SELECTION CHART Color Code Size HD® Part # S&S Part # Orange 24040-78 33-4141 USA

White

33-4142 USA

Biggest

24041-78

Yellow

33-4143 USA USA 3

24042-78

Red

33-4144 USA USA 1

24043-78

Blue

33-4145 USA

Average

24044-78

Green

33-4146 USA

24045-78

Black

33-4147 USA

Smallest

24046-78

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 # 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. S&S® does not offer a replacement pinion shaft for 1990–’99 big twin engines that accepts a stock pinion gear, oil pump drive gear, gear spacer and pinion gear nut, because experience has shown that the design is not strong enough for performance applications. For this reason, we recommend and sell only the pre–1990 style pinion shaft for big twins. To make the change easier, S&S offers a conversion package consisting of a pinion gear, spacer, nut and oil pump drive gear for big twin engines.

PINION SHAFT GEAR KITS PINION SHAFT GEAR KITS FOR 1984–’89 BIG TWINS Color Code Size S&S Part # Yellow Biggest 33-4185 Red Average 33-4148 Blue 33-4181 Black Smallest 33-4180

INDIVIDUAL COMPONENTS Description

S&S Part #

33-4289

Pinion Shaft Gear Spacer USA 1,2,3

33-4244

Pinion Shaft Gear Nut 24023-54 USA 1,2,3

Pinion Shaft Oil Pump Drive Gear* 6 teeth 26349-73, 26349-73A

33-4232

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 these kits when installing an S&S flywheel assembly in a 1990-’99 engine.

Oil Pump Drive Gear** 24 teeth 26345-73

33-4230

*Requires S&S part #33-4230 or 26345-73 drive shaft drive gear. Fits 1984-’89 stock and 1984-’99 S&S pinion shafts. **Requires S&S part #33-4232, part #33-4237 or 26349-73, 26349-73A pinion shaft drive gear.

33-4244

33-4230

33-4232

33-4289

All reference to HD® Part #s is for identification purposes only. We in no way are implying that any of S&S® Cycle’s products are original equipment parts or that they are equivalent to the corresponding HD Part # shown.

46 S&S Vintage 1926–1999 Order 608-627-1497