S&S Cycle 91-7202 Big Bore Cylinder and Piston Kit Natural Finish - 96

The S&S Cycle 91-7202 is a complete 96 cubic inch big bore cylinder and piston kit designed to upgrade 1984-1999 Harley-Davidson Evolution Big Twin engines with stock cylinder heads. This kit increases engine displacement by utilizing 3-5/8" bore cylinders paired with a 4-5/8" stroke, delivering enhanced performance and dependable power that has made the S&S 96" kit one of the most popular high-performance options for Evolution engines.

Complete Kit Includes:

• S&S 3-5/8" bore aluminum cylinders with cast-in iron liners in natural aluminum finish
• 3-5/8" bore forged flat-top pistons with rings and wristpins
• Head gaskets, base gaskets, and exhaust gaskets
• Complete installation instructions

Key Specifications:

• Bore: 3-5/8 inches (3.625")
• Stroke: 4-5/8 inches (for use with stroker flywheel assembly)
• Compression ratio: 9.75:1
• Final displacement: 96 cubic inches (1573cc)
• Cylinders are nearly stock length, allowing use of stock-length pushrods and manifold

Installation Requirements:

• Stock crankcases must be bored to accommodate the larger 3-5/8" bore cylinders
• Requires 4-5/8" stroker flywheel assembly (S&S part number 92-1930)
• EFI systems must be recalibrated after installation
• Professional installation by a skilled technician is required

This kit can be used to replace cylinders and pistons in engines previously upgraded with an S&S 96" Hot Set Up Kit, or to upgrade engines with an S&S 89" stock bore stroker kit to 96 cubic inches. Constructed from premium materials and made in the USA, this kit delivers the proven performance and reliability that S&S Cycle is known for.