Hastings 2M6482070 Piston Rings 3.437" + 0.070" 41-80 74" Big Twin Made in USA

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 and behind the ring resulting in better oil economy
Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
Oil Control Rings are Three Piece Flex Vent
Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore
Provides uniform pressure through four steel rails and two expanders assuring positive oil control
Made in the USA

Due 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.

Kit Includes:
2x Top Compression Rings 0.0625"
2x Second Compression Rings 0.0625"
2x Expander Rings
4x Steel Rails

Specs
Product Name Piston Ring Set
Style Performance Replacement
Ring Material Moly Coated
Bore Size 3.437"
Bore - Oversize +0,070" / +0.070"
Units Set
Riding Style Street

Package info
Weight 0.25 lbs
Height 1.25
Length 4.25
Width 4.17

1980 Harley-Davidson FLHS Electra Glide Sport
1979-1980 Harley-Davidson 1200 Super Glide FXE
1979-1980 Harley-Davidson 1200 Fat Bob FXEF
1979 Harley-Davidson 1200 Low Rider FXS
1977-1978 Harley-Davidson FXS Low Rider
1974-1978 Harley-Davidson FXE Super Glide
1971-1978 Harley-Davidson FX Super Glide
1970-1977 Harley-Davidson FLH Electra Glide
1965-1980 Harley-Davidson Electra Glide FL
1965-1969 , 1978-1980 Harley-Davidson 1200 Electra Glide FLH
1958-1964 Harley-Davidson FLH Duo-Glide
1958-1964 Harley-Davidson Duo Glide FL
1949-1951 , 1953-1957 Harley-Davidson Hydra Glide FL
1948 Harley-Davidson FL
1941-1947 Harley-Davidson Knucklehead FL