S&S Cycle 91-7707 Big Bore Cylinder and Piston Kit Wrinkle Black - 96

The S&S Cycle 91-7707 is a 96 cubic inch Sidewinder big bore cylinder and piston kit designed for S&S V96 engines and 1984-'99 Harley-Davidson Evolution Big Twin engines equipped with S&S Super Stock cylinder heads. This comprehensive performance upgrade kit transforms your engine with larger displacement and improved power output.

Key Features:

• 3-5/8" bore cylinders with 5.565" length for 4-5/8" stroke
• 10.2:1 compression ratio for enhanced performance
• Forged domed Super Stock pistons with rings and wristpins included
• Wrinkle black finish for a classic performance look
• Nearly stock cylinder length allows use of stock pushrods and manifold
• Complete kit includes head gaskets, base gaskets, exhaust gaskets, and instructions

This kit can replace cylinders and pistons on S&S V96 engines or upgrade stock Harley-Davidson Evolution Big Twin engines with S&S 96" Hot Set Up Kit. It can also be used to upgrade engines with S&S 89" stock bore stroker kits to 96". Note that stock crankcases must be bored to accommodate the larger 3-5/8" bore cylinders, though the 4-5/8" stroker flywheel assembly does not require rebalancing. EFI systems will need recalibration.