S&S CYCLE 132" High Compression / 136" Big Bore Kit — 4-1/2" & 4-5/8" stroke – 19-26 Softail, 19-26 Touring, 20-25 Trike, 20-25 CVO

High-compression big bore kit engineered to boost power and torque for compatible V-twin engines. ⚙️

Works with motors that use a shorter-stroke flywheel; to reach the larger big bore, a dedicated flywheel with a longer stroke is required and sold separately. 🔧

Precision-machined components improve combustion efficiency and durability for spirited street and light-track use.