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S&S 106 Big Bore Cylinder Piston Kit For 07-17 Harley Twin Cam 60399
07-17 Harley Twin Cam 106 Big Bore Cylinder Piston Kit 60399. Largest bore that we feel can safely be used in a cylinder with a stock spigot diameter. Bolt-on 9 to 10 cubic inches - cylinders do not require crankcase machining to install. Increased fin area for better heat dissipation. Forged coated pistons are compatible with stock or S&S Super Stock.
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 closely resembles OEM shape. S&S logo and part numbers are less conspicuous. Silver powder coat or wrinkle black powder coat cylinder finish color matches Harley-Davidson. S&S Silver Powder Coat Finished Bore Kit Fits Big Twin models 2007/2017 96" to 106" Displacement.