Perf. Piston Ring Set V8 4.030 Bore 1.2x1.2x3.0

The Perf. Piston Ring Set V8 4.030 Bore 1.2x1.2x3.0 is designed specifically for high-performance V8 engines that require precise ring geometry and superior sealing capabilities. This set is ideal for those who are rebuilding modified big-block engines, restoring classic muscle cars, or refreshing engines after performance upgrades.

Engineered with NPR's advanced ring technology, this piston ring set features a three-piece design with 1.2mm top and second ring widths, along with a 3.0mm oil ring, optimized for the 4.030-inch bore specification. The ring face coating and gap design are intended to ensure even wear distribution and maintain consistent contact pressure against cylinder walls, preventing issues such as ring sticking or blow-by.

This ring set is essential for 4.030-bore V8 blocks, which are commonly found in big-block Chevrolet, Ford, and Mopar platforms, including overbored or aftermarket block applications. Proper installation with correct end-gap and side-clearance verification is crucial for optimal performance and longevity.