Hastings Piston Ring Set - 2M5721 For Harley Motorcycles 1948-1985 Brand_Paul Yaffe Bagger Nation Allow passing lamps to remain

Allow passing lamps to remain on when headlamp is switched to high beam

Rolling pins versus sliding creates less friction and resistance

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Hastings Piston Ring Set - 2M5721 For Harley Motorcycles 1948-1985 Brand_Paul Yaffe Bagger Nation Allow passing lamps to remainFeatures 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 Reverse Torsional Taper Face Promotes side sealing that prevents oil from being forced under