S&S CYCLE 96" Sidewinder® Engine Performance Kit — 3.625" bore, 4.625" stroke, 9.75:1 compression – 85-98 Touring, 85-99 Softail, 91-99 Dyna, 85-86 Big Twin, 85-94 FXR, 99 CVO

Upgrade your engine with the S&S Sidewinder® performance kit designed for reliable power and proven hardware. 🔧🇺🇸⚙️

• Complete kit includes a standard flywheel assembly, Sidewinder® stroker big bore cylinder, pistons, rings and gaskets.
• Flywheel assembly is built with heavy-duty connecting rods and mainshafts; head, base and exhaust gaskets are included.
• Converts a stock engine to a larger displacement using the included stroker components.
• Made in the USA and engineered for long-term durability.
• Does not include manifold, pushrods, or pushrod clips; additional parts and machine work may be required for installation.
• When installing S&S flywheels in later engines, use the correct era pinion gear and oil pump drive gears as specified by S&S.
• Cases must be machined to accept the big bore cylinder and a minor crankcase clearancing operation for the crankpin nut is required.

Professional installation and machine work are recommended to ensure proper fit and reliable operation.