JE Pistons J100F8-4020-5 Piston Ring Set, 8 Cyl. 4.020 in. Bore, 1/16 x 1/16 x 3/16 in. Thick, Ductile Iron, Plasma Moly, File Fit
JE Piston Rings are designed to maximize horsepower through precision sealing of combustion pressure. They are offered in a huge selection of sizes, various materials, and in multiple thicknesses to suit a wide variety of engines. JE Pistons also offers an array of custom piston ring services including back cutting, dyke cutting, lapping, grinding, and PVD coating. These services, the same used by top NHRA Pro Stock and NASCAR teams, are now available to the public and offer tremendous gains in durability, power through reduced friction, and improved ring seal.
- Bore (in.):
- 4.020 in.
- Bore (mm):
- 102.108mm
- Top Ring Included:
- Yes
- Top Ring Thickness:
- 1/16 in.
- Top Ring Material:
- Ductile Iron
- Top Ring Facing Material:
- Plasma Moly
- Second Ring Included:
- Yes
- Second Ring Thickness:
- 1/16 in.
- Second Ring Material:
- Ductile iron
- Second Ring Facing Material:
- Phosphate
- Oil Ring Included:
- Yes
- Oil Ring Thickness:
- 3/16 in.
- Oil Ring Material:
- Steel
- Oil Ring Facing Material:
- Chrome
- Oil Ring Tension:
- Standard
- Oil Ring Tension Rating (lb.):
- 11-12 lb.
- Gapless:
- No
- Gas Ported:
- No
- File Fit:
- Yes
- Quantity:
- Sold as a set of 8.
- Notes:
- Barrel face D-wall torsional top ring, taper face D-wall reverse torsional second ring with SS50U style oil ring
