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

1984-'99

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

Complete Sidewinder kits contain a dynamically balanced flywheel assembly -including connecting rods and mainshafts, cylinders and pistons - fit and ready to install, and head and base gaskets Longer than stock head bolts are included in 98” and 103” kits to provide correct cylinder stud thread en gagement with the longer cylinders supplied in these kits An S&S manifold, pushrods, and pushrod clips are included in kits that include cylinders that are longer or shorter than stock This includes all but the 96” kit

Fitment • 1984–’99 carbureted Features And Benefits

• Large displacement at a relatively small price • Significant increase in horsepower and torque Options • Top end kits for 80" engines and engines with S&S 89" stroker kits 96" displacements available • Valve train items — Cams, tappets, valve springs, rocker arms, rocker covers

91-7660

Complete S&S® Sidewinder® Kits For Harley-Davidson® Evolution® Big Twin engines Specifications Displacement Stroke Compression Ratio

Cylinder Length

96"

45/8"

9 75:1

5 565"

91-7661

Complete S&S® Sidewinder® Kits For Harley-Davidson® Evolution® Big Twin engines Finish Part #

91-7202* 91-7660 91-7702* 91-7661

Natural

Wrinkle Black

*Denotes big bore Top End Kit only NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTORVEHICLE. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTORVEHICLE UNDERTHE CLEAN AIR ACT

Cases must be bored to accept 35/8" bore cylinders, and a minor crankcase clearancing operation for the crankpin nut must be performed Extra parts needed: 1977–’89 style pinion gear and oil pump drive Gears must be used when installing S&S flywheels in 1990–’99 engines

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