Perf. Piston Ring Set V8 4.145 Bore 1.2x1.2x3.0

The Performance Piston Ring Set V8 4.145 Bore 1.2x1.2x3.0 from NPR Piston Rings is engineered for high-performance V8 engines requiring precise ring geometry and superior sealing characteristics. This set is ideal for builders and enthusiasts who demand OEM-quality specifications or enhanced performance in stroked or modified big-block engines. It is essential for those rebuilding a street engine, prepping a race motor, or restoring a classic V8.

This piston ring set features a 1.2mm top ring, 1.2mm second ring, and 3.0mm oil control ring configuration—a proven profile that balances compression sealing with reduced friction and improved oil management. The 4.145-inch bore dimension accommodates large-displacement V8 applications, ensuring reliable power output. NPR piston rings are manufactured to tight tolerances, using premium materials and precise coating processes to ensure consistent gap closure and minimal wear rates.

This ring set is particularly beneficial for V8 rebuild kits and high-performance machine shops, providing the necessary components for engines with 4.145-bore configurations. It is designed to deliver compression stability and blow-by control critical for longevity and peak efficiency. Engine builders can trust this piston ring set for street and race applications, ensuring robust sealing across all RPM ranges.