Perf. Piston Ring Set V8 4.055 Bore 1.5x1.5x3.0

The Perf. Piston Ring Set V8 4.055 Bore 1.5x1.5x3.0 from NPR Piston Rings is engineered for serious V8 engine builders and performance mechanics who demand precision ring sets that maintain compression and oil control under elevated boost and high-RPM conditions. This complete ring set is designed for large-displacement and supercharged V8 builds where factory rings fall short of durability requirements. Whether you're rebuilding a stroked big-block, freshening a forced-induction platform, or assembling a performance crate engine, NPR's piston rings deliver the reliability needed for long-term power delivery.

The 4.055-inch bore specification accommodates oversized pistons typical in custom V8 applications, while the 1.5x1.5x3.0 groove configuration—top compression ring, second compression ring, and oil control ring dimensions—balances ring-to-bore clearance for minimal blow-by with effective oil management. NPR's manufacturing process ensures consistent tension and precise axial gap tolerances that prevent ring sticking and cold-start binding across temperature extremes. The performance-grade material composition resists scuffing, provides superior heat dissipation compared to cast-iron OEM rings, and handles the thermal cycling associated with aggressive tuning, turbocharging, or nitrous oxide systems.

This ring set suits dedicated performance engines, race applications, and high-output street builds where compression ratios exceed 10.5:1 or boost pressure demands superior ring integrity. Installation requires proper piston-to-bore honing and adherence to correct ring end-gap specifications for your specific displacement and bore finish. Always verify bore diameter, piston pin height, and ring groove geometry before ordering to ensure proper fitment on your V8 platform—whether LS-based, small-block Chevy, big-block Ford, Mopar, or custom modular applications. Pair with quality ring compressors, assembly lube, and precision torque specs for optimal ring seating and longevity.