Perf. Piston Ring Set V8 4.005 Bore 1.2x1.5x3.0

The Perf. Piston Ring Set V8 4.005 Bore 1.2x1.5x3.0 is designed for serious engine builders and performance mechanics who require precision-fitted compression rings for high-displacement V8 applications. This NPR piston ring set is essential for engine rebuilds and performance upgrades, ensuring proper ring gap, blow-by control, and oil management in oversized or freshly bored cylinders.

The 1.2x1.5x3.0 ring geometry specifies the thickness of the top compression ring (1.2 mm), second ring (1.5 mm), and oil ring rail (3.0 mm), which directly affects ring sealing efficiency and oil control under varying cylinder pressures. Constructed from advanced iron alloys and heat-treated for durability, these rings resist scuffing and maintain dimensional stability across thermal cycles, providing superior conformability to cylinder wall finishes.

Mechanics and engine builders working on fuel-injected, turbocharged, or naturally aspirated V8 engines will find this piston ring set ideal for applications that require precise bore sizing. The 4.005-inch bore dimension makes these rings suitable for big-block applications, typically in the 427–454 cubic-inch range, where maintaining proper ring tension and seal quality is critical for performance.