74" 3-7/16" Bore Cylinder and Standard Compression Piston Kit for 1966-'78 74" HD® Big Twins - Gloss Black Finish halo-ring Exempt from emissions tampering regulations

Exempt from emissions tampering regulations under CARB EO# D-355-37

Designed to fit 11

Three stage oil pump for consistent pressure and reliable scavenging

Start with HHI triple trees

74" 3-7/16" Bore Cylinder and Standard Compression Piston Kit for 1966-'78 74" HD® Big Twins - Gloss Black Finish halo-ring Exempt from emissions tampering regulationsThis kit is intended to replace the cylinders and pistons of a 74" shovelhead engine and keep the stock compression ratio of 8: 1. Compatible with stock or S&S cylinder heads. Kit includes S&S 3 7 16" bore high tensile cast iron cylinders, 3 7 16" bore forged standard compression pistons for 74" (3 31 32" stroke) engines with rings and wristpins, head gaskets, S&S stainless steel head bolts with washers, base nuts, base gaskets