Perf. Piston Ring Set V8 4.035 Bore 1.2x1.5x3.0

The Perf. Piston Ring Set V8 4.035 Bore 1.2x1.5x3.0 from NPR Piston Rings is designed for serious V8 builders and engine rebuilders who require precision compression sealing and reduced blowby in high-performance applications. This ring set is tailored for large-displacement V8 engines with a 4.035-inch bore diameter, making it suitable for stroker builds, race engine modifications, and full rebuilds where OEM or oversized replacements are necessary.

The NPR performance ring geometry features a 1.2mm top ring, 1.5mm second ring, and 3.0mm oil ring configuration, which is a proven design that balances ring tension, sealing capability, and bearing load distribution across the piston skirt. The top compression ring provides primary combustion sealing while resisting detonation and heat stress, while the second ring acts as a secondary seal and scrapes carbon deposits. The oil control ring manages crankcase ventilation and cylinder wall lubrication, minimizing friction losses compared to thicker rings.

Engine builders working on various V8 platforms, including Chevrolet LS, big-block Chevy, and Ford 427/460, will benefit from this ring set. Proper piston ring selection is crucial for maintaining cylinder pressure retention, oil consumption, and overall engine efficiency, making this product an essential component for both street performance engines and those prepared for track duty.