Perf. Piston Ring Set V8 4.070 Bore 1.2x1.2x3.0

The Performance Piston Ring Set V8 4.070 Bore 1.2x1.2x3.0 from NPR Piston Rings is designed for V8 enthusiasts and engine builders who require high-quality, precision-engineered ring sets for high-displacement or bored-over applications. This set is particularly beneficial when working with cylinder bore sizes of 4.070 inches, where standard ring geometry may not suffice.

The ring set features a 1.2mm top ring, a 1.2mm second ring, and a 3.0mm oil ring configuration, which is a proven design that optimizes sealing integrity while minimizing friction. Each ring is manufactured to strict tolerances, ensuring proper end-gap clearance and radial pressure, which are essential for preventing ring flutter and blow-by, especially under high boost or nitrous conditions.

Engine builders and V8 enthusiasts engaged in big-bore builds, whether for naturally aspirated strokers, supercharged race engines, or turbocharged street applications, will find this ring set indispensable for any 4.070 bore project. Its advanced material science and heat treatment processes enhance durability and performance, making it a reliable choice for serious engine work.