V-FACTOR (Moly) 80ci - 1340cc STD Displacement 8:1 Compression Ratio +.040 OS Bore Size Fits Big Twin Shovelhead

V-FACTOR (Moly) 80ci - 1340cc STD Displacement 8:1 Compression Ratio +.040" OS Bore Size Fits Big Twin Shovelhead

High quality cast piston kits that meet or exceed original equipment specifications
Compression ratio listed with each piston
Sold each with piston pin and lock rings
Low compression pistons enable the use of pump gas without detonation
See the engine section for piston ring sets
Moly part numbers have molybdenum coated shirts to help prevent cylinder wall scuffing
Note: * It is not recommended to bore Sportster 1972/Early 1973 models more than .030" OS