Perf. Piston Ring Set V8 4.165 Bore 1.2x1.5x3.0

The Perf. Piston Ring Set V8 4.165 Bore 1.2x1.5x3.0 from NPR Piston Rings is designed for high-performance V8 engines that require precise ring geometry and reliable sealing. This set is particularly suited for engines with a 4.165-inch bore diameter, making it ideal for custom builds, stroker modifications, and competition applications where OEM rings may fall short.

This piston ring set features a three-piece configuration with dimensions of 1.2mm for the top ring, 1.5mm for the second ring, and 3.0mm for the oil ring. This configuration balances compression retention with acceptable friction losses, essential for performance V8 applications. The manufacturing process ensures controlled gap tolerances, which helps maintain performance across temperature extremes and reduces wear.

Engine builders focusing on LS platforms, big-block Chevrolets, and large-displacement V8s will find this ring set beneficial for achieving optimal performance. The precise fit in custom-bored blocks or aftermarket cylinder sleeves is critical for ensuring proper ring-wall contact pressure and minimizing oil consumption, making it a trusted choice among builders and engine shops.