Supertech 99.50mm Bore Piston Rings - 1x3.70 / 1.2x4.10 / 2.8x3.10mm/ High Performance Gas Nitrided

These Supertech piston rings are gas nitrided, a surface hardening process that makes the ring surface tougher and more resistant to wear. This is especially important for high-performance gas engines where combustion pressures and temperatures are higher than stock. The ring set is designed for a 99.50mm bore, with specific dimensions for each ring: the top ring is 1x3.70mm, the second ring is 1.2x4.10mm, and the oil ring is 2.8x3.10mm.

The nitriding process creates a very hard layer on the ring surface, which helps it withstand the abrasive action of the cylinder wall and piston grooves. This improved durability means the rings can maintain a good seal for longer, even under demanding operating conditions. Proper ring seal is crucial for engine performance, as it keeps combustion pressure from blowing past the piston and ensures efficient transfer of heat from the piston to the cylinder wall.