Hot Set Up Kit, Big Bore, 106", w/o Heads,w/ Cylinders Pisto

Made in the USA Increased fin area for better heat dissipation Increase bore size from 3.750" to 3.927" 4.375" stroke, 10.0:1 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 EFI system must be recalibrated.