Hastings Piston Ring Set - 2M4942 For Harley Motorcycles 1999-2006 Brand_Castrol Direct bolt-on design for easy

Direct bolt-on design for easy installation

Holds sprockets and rotors with holes center-to-center at a minimum distance of 1/2" (13 mm) and a maximum distance of 9" (230 mm)

Increases driving safety

Proprietary high-temperature coatings along with embossments provide a micro seal for fluids against the head and block surface

Hastings Piston Ring Set - 2M4942 For Harley Motorcycles 1999-2006 Brand_Castrol Direct bolt-on design for easyFeatures Includes top compression rings, second compression rings, and oil control rings Top Compression Rings are Barrel Face Helps in the the heat transfer process between the piston and cylinder wall Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft Second Compression Ring are Napier Reverse twist ring along with a taper machined ring face duplicates the OD bottom side