S&S CYCLE Bore Cylinder and Stroker Piston Kit — 84", 86", 88" displacement, 3.4375" bore – 70-84 Big Twin, 79-83 Touring, 82-84 FXR, 84 Police

Complete cylinder and piston kit for building 84" , 86" or 88" stroker engines or replacing the cylinders and piston in an engine with an existing S&S® stock bore stroker kit.

The kit fits engines using 4-1/2", 4-5/8" or 4-3/4" stroke flywheels and includes forged pistons with rings and wristpins, head gaskets, stainless steel head bolts with washers, base nuts and base gaskets.

Includes high-tensile cast iron cylinders engineered for durability and consistent performance.

Made in the U.S.A. 🛠️