Hastings Piston Ring Set – 2M6482050 For Harley Motorcycles 1953-1980

Description

Includes top compression rings, second compression rings, and oil control ringsTop Compression Rings are Barrel FaceHelps in the the heat transfer process between the piston and cylinder wallControls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaftSecond Compression Ring are Reverse Torsional Taper FacePromotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economyReverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ringOil Control Rings are Three Piece Flex VentThree-piece design allows rails to be manufactured with a small cross sectional area for better conformability to boreProvides uniform pressure through four steel rails and two expanders assuring positive oil controlMade in the USADue to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.Includes enough rings for two pistons (unless noted).Two rings per groove, except for the rails that will be two rail rings per one expander ring.SpecsBore Oversize+0.050″Product NamePiston Ring SetBore – Oversize+0,050″Bore Size3.437″Riding StyleStreetStylePerformance ReplacementUnitsSetRing MaterialMoly CoatedPart NotesKit Includes:• 2x Top Compression Rings 0.0625″• 2x Second Compression Rings 0.0625″• 2x Expander Rings• 4x Steel Rails