Perf. Piston Ring Set V8 4.030 Bore 1.5x1.5x3.0

The NPR Performance Piston Ring Set V8 4.030 Bore 1.5x1.5x3.0 is engineered for serious engine builders and hot rodders seeking reliable compression sealing in high-displacement V8 applications. Whether you're rebuilding a modified big-block or refreshing a performance engine destined for the street or strip, this ring set delivers the precision fit and durability required to maintain cylinder pressure and oil control under demanding conditions.

NPR piston rings have earned respect among mechanics and engine shops for consistent quality across both stock and upgraded displacement configurations. This ring set features the classic 1.5mm top ring, 1.5mm second ring, and 3.0mm oil ring configuration—a proven geometry that balances blow-by control with minimal friction. The 4.030-inch bore specification accommodates both factory overbore blocks and performance-built mills, ensuring tight tolerances that prevent excessive gap growth under heat cycling.

Mechanics and engine builders favor this ring set for naturally aspirated and forced-induction V8 rebuilds where stock or mildly modified compression ratios are targeted. Installation requires precision honing to the specified bore diameter to ensure optimal performance and longevity of the engine. This complete set is designed for eight-cylinder applications, making it an ideal choice for those looking to enhance their engine's performance.