Perf. Piston Ring Set V8 4035 Bore 1.2x1.2x3.0

The Perf. Piston Ring Set V8 4035 Bore 1.2x1.2x3.0 is engineered for high-performance V8 engines demanding precision ring fitment and reliable combustion sealing. Built by NPR Piston Rings, this ring set addresses the critical need for controlled blow-by, reduced oil consumption, and consistent compression across all eight cylinders during both street and competition use.

The 1.2x1.2x3.0 ring geometry specifies a top ring thickness of 1.2mm, second ring thickness of 1.2mm, and oil ring thickness of 3.0mm—a modern proportioning that balances minimal friction loss against maximum sealing integrity. The bore diameter of 4.035 inches accommodates mid-to-large displacement V8 applications typical of classic muscle cars, modern performance builds, and industrial engine platforms. NPR's manufacturing process ensures dimensional consistency and proper tension, critical factors that prevent ring flutter and maintain optimal contact pressure against cylinder walls.

Mechanics and engine builders select this ring set for replacement during complete overhauls, where factory-worn rings have lost tension and allowed excessive gas blowdown. Installation requires proper ring gap clearancing to the specific bore and correct piston groove dimensions, ensuring optimal performance and longevity. This piston ring set is ideal for anyone looking to enhance their engine's efficiency and power output.