HASTINGS - 2M6482070/Replacement Piston Rings - Piston Rings - 3.437" + 0.070" - 74" Big Twin
Features
- 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
Note
- 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" |
| Bore Oversize | +0.070" |
| Units | Set |
| Riding Style | Street |
Fitments
| 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 |
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
General Safety Warning
Failure to follow manufacturer's recommendations and requirements can cause product failure resulting in serious injury or death. While effort has been taken in collecting accurate fitment information, LeMans Corporation accepts no liability for loss or damage resulting from errors or omissions.
Periodically cleaning of your wheels is necessary to maintain a high luster, especially 24K gold plated wheels these require extra care. Always clean using a mild dish soap and water such as Dawn and a clean microfiber cloth, to clean inside the hub and spokes use a soft horse hair paint brush. NEVER use any harsh cleaning compounds or waxes as the are abrasive and will remove the gold plating. During storage spray a light coating of WD40 on the wheels to prevent rusting.