JE Pistons Ring Sets 1.5 1.5 4mm RING SET eBay JE Pistons Ring Sets 99.75 79 130.5 30.7 57.0 8.5:1 17.0 405 TF (For Single Piston) Effect of Groove Texture on Deformation and Sealing Performance of 68 0912 BSA A65 Pistons & Ring Sets .060 19233 60 British 70 6884 Triumph T100 Pistons & Ring Sets STD 1968 74 British. 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.