Total Seal AP Advanced Profiling Top Piston Rings

Total Seal AP Advanced Profiling top piston rings are the flattest, tightest tolerance piston rings available anywhere. Intended for hard core racing, they are currently in use at the highest levels of stock car, drag, and open wheel competition. Get the same horsepower producing piston ring technology that Total Seal delivers to the top engine builders in NASCAR Cup, IndyCar, NHRA, IHRA, and Formula 1. AP Advanced Profiling top rings are produced to extremely close axial and radial tolerances with minimal surface roughness. Face coatings include plasma-moly or state-of-the-art proprietary PVD coatings. Total Seal Diamond Finish second rings are produced to the same tight tolerances and are available with a standard taper face or a sharp edge technology Napier design. Combine the two with Total Seal special application oil rings, they are the ultimate ring sets. Additional features and benefits of Total Seal AP Advanced Profiling top piston rings: * Manufactured from 440B stainless steel * Stronger, longer life, and the most precise tolerances * Saves money (fewer teardowns) * Thinner, flatter, and lighter * Conforms better to the cylinder wall * 1.0mm and larger available in any bore size from 2.992 in. to 5.125 in. * Special axial-sizing available * Works well in all applications, notably dirt environments * Easier on cylinders, reducing bore wear * Uses C33 face coating; doesn't allow dirt to penetrate coating * Available in gapless or conventional styles Show Less