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These forged 3-7/8" bore stroker pistons for 1999-'16 HD® Big Twin are required for the S&S 106" stock bore stroker kit with 4-1/2" stroke flywheelsThey are compatible with stock or S&S® Super Stock® cylinder headsStock 88" cylinders may be bored to...

These forged 3-7/8" bore stroker pistons for 1999-'16 HD? Big Twin are required for the S&S 106" stock bore stroker kit with 4-1/2" stroke flywheelsThey are compatible with stock or S&S? Super Stock? cylinder headsStock 88" cylinders may be bored to...

These forged 3-7/8" bore stroker pistons for 1999-'16 HD? Big Twin are required for the S&S 106" stock bore stroker kit with 4-1/2" stroke flywheelsThey are compatible with stock or S&S? Super Stock? cylinder headsStock 88" cylinders may be bored to...

All piston kits come with two pistons, rings, wrist pins, and wrist pin keepersCompression ratios listed are approximate and are calculated using the correct length cylinders as specified by S&SRequire the use of connecting rods with a rod length of 7...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel silicon carbide-plated for long...

Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylindersNickel silicon carbide-plated for long lifeMade in the U.S.A. Polaris -- RZR XP 1000 4x4 -- (2017, 2018, 2015, 2014, 2016); Polaris -- RZR...

Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylindersNickel silicon carbide-plated for long lifeMade in the U.S.A. Polaris -- RZR Trail 900 EPS 4x4 -- (2015, 2016); Polaris -- RZR 900 XC 4x4...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersCylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noiseNickel Silicon Carbide plated for long...