106″ Hot Set Up® Engine Performance Kit – Black

Increased fin area for better heat dissipation; Increase bore size from 3.750″ to 3.927″; 4 3/8″ stroke, 10:1 compression with stock heads; Easy installation; no machining or rebalancing required; Forged coated pistons are compatible with stock or S&S Super Stock 79cc and 89cc heads; Valve pocket recessed in S&S pistons are enlarged for oversize valves and higher lift cams; 11 fins and full fin pattern on cam side of cylinders closely resembles OEM shape; Kit includes; S&S cylinders with gaskets, piston set with rings, top end gasket kit, pushrods, tappets, 585CE chain-drive easy start cams and instructions; A fuel system is not included; Made in the U.S.A.