JE Pistons J75008-4125-5 Pro Steel Series Piston Ring Set, 8 Cyl. 4.125 in. Bore, 1.2 x 1.5 x 3.0 mm Thick, Steel, 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.):
- 4.125 in.
- Bore (mm):
- 104.775mm
- Top Ring Included:
- Yes
- Top Ring Thickness:
- 1.200mm
- Top Ring Material:
- Steel
- Top Ring Facing Material:
- Plasma Moly
- Second Ring Included:
- Yes
- Second Ring Thickness:
- 1.500mm
- Second Ring Material:
- Ductile iron
- Second Ring Facing Material:
- Phosphate
- Oil Ring Included:
- Yes
- Oil Ring Thickness:
- 3.000mm
- Oil Ring Material:
- Steel
- Oil Ring Facing Material:
- Chrome
- Oil Ring Tension:
- Low
- Oil Ring Tension Rating (lb.):
- N/A
- Gapless:
- No
- Gas Ported:
- No
- File Fit:
- Yes
- Quantity:
- Sold as a set of 8.
- Notes:
- Barrel face backcut torsional top ring, Napier backcut neutral second ring with full seal flex vent-style oil ring
