S&S Cycle

STOCK BORE STROKER KITS FOR 1971–’85 HARLEY-DAVIDSON ® IRONHEAD SPORTSTER ® FITMENT • 1972–’85 1000cc Ironhead Sportster models FEATURES AND BENEFITS

• Economical—re-use most stock engine components • More Power—longer stroke and larger displacement OPTIONS • Piston oversize • S&S Super B or Super E carburetor • S&S pushrods

32-3055

S&S® STOCK BORE STROKER KITS SPECIFICATIONS–HARLEY-DAVIDSON® IRONHEAD SPORTSTER® MODELS

Displacement

Stroke

Bore

Compression Ratio

Piston Type*

Cylinder Length Application

74"

45⁄8"

33⁄16"

9:1

Forged

Stock

Short Trips, Street, & Strip

*Order pistons separately. See chart below.

STOCK BORE STROKER KITS FOR HARLEY-DAVIDSON® IRONHEAD SPORTSTER® MODELS Year Part # 1977–’81 32-3055 Custom Flywheels 32-3014 Note: Order pistons separately. See chart below. .

106-5542

THESE KITS REQUIRE SPECIAL S&S PISTONS. SEE CHART. !

STROKER PISTON KITS FOR 1972–'85 HARLEY-DAVIDSON® SPORTSTER® MODELS Oversize +.010 +.020 +.030

+.060

Part # 106-5791 Piston Deck Height = .806". Piston kits include rings, wristpins and keepers. Recommended Piston Fit: Close: .0030"-.0035" Loose: .0045"-.0055" 106-5542 106-5543 106-5544

NOTES: For the best performance, an S&S carburetor, performance cams, and performance exhaust are recommended. Do to the increased displacement and compression, cams with longer duration are recommended for easier starting. If replacing the pistons in a older 77" stroker engine, stroker plates are required, and all clearances must be checked.

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