S&S CYCLE 136" Big Bore Kit — 136" displacement, 4.320" bore, 4.625" stroke – 18-23 Softail, 21, 23 Touring, 17-23 Trike, 20-22 CVO

This S&S Cycle 136" Big Bore Kit is an aftermarket cylinder kit built around 4.320" big bore cylinders and an S&S 4-5/8" (4.625") stroker flywheel.

It maintains original factory engine height for stock frame and exhaust clearance and retains original engine serial numbers.

Fitment notes: Direct bolt-on for 114" and 117" with stock flywheel to make 132" high-compression displacement; reaching 136" requires the S&S 4.625" stroker flywheel. 107" engines require the S&S 4.625" stroker flywheel assembly to achieve 136" displacement. Does not fit models equipped with Variable Valve Timing (VVT) and is not compatible with H-D 4-5/8" stroke flywheel.

Includes:

• 2x cylinders with ductile iron liners
• 2x forged piston kits
• 2x multi-layer steel (MLS) head gaskets
• 2x base gaskets and cylinder O-rings
• 1x S&S Cycle 136" cam cover badge