Perf. Piston Ring Set V8 4.060 Bore 1.5x1.5x3.0

The Perf. Piston Ring Set V8 4.060 Bore 1.5x1.5x3.0 is a precision-engineered ring package designed for high-performance V8 engines requiring tight bore specifications. Built by NPR, a trusted manufacturer in OEM and racing applications, this ring set serves engine builders, machine shops, and enthusiasts tackling serious displacement work or performance rebuilds. Whether you're restoring a classic big-block, assembling a stroker package, or refreshing a race engine, quality piston rings are non-negotiable for compression sealing and oil control.

This three-ring set follows a 1.5mm top ring, 1.5mm second ring, and 3.0mm oil ring configuration—a time-tested stack that balances sealing efficiency with low friction and reliable oil scraping. The 4.060-inch bore diameter targets mid-range and larger V8 displacement builds, from 383 to 427 cubic inches depending on stroke. NPR piston rings are manufactured to exacting tolerances, utilizing durable iron compositions and precision grinding to ensure consistent gap closure and minimal blow-by across the RPM range. Proper ring-to-bore fit and gap clearance are critical; these rings deliver the dimensional consistency required for repeatable, dependable combustion chamber sealing.

Engine builders and machine shops will find this ring set compatible with aftermarket and OEM pistons engineered for 4.060-inch bores, making it ideal for both street and competition V8 applications. Installation requires proper ring gapping and piston groove clearance verification to avoid binding or excessive wear. Whether you're building a classic muscle car, a street rod, or a dedicated race engine, this NPR piston ring set delivers the sealing integrity and durability required for long-term reliability and consistent power output.