NPR American V8 Engine Ring Series Piston Ring Set - 4.060 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 12-678-4 Ideal replacement for factory boost

Ideal replacement for factory boost controllers

CNC Machined 6061 Aluminum Construction

Kickdown Seal Installed In Selector Shaft

Delrin bushings ensure smooth suspension action and precise steering

Penske Racing Shocks is a dominant shock supplier in the AMA Flat Track racing series

NPR American V8 Engine Ring Series Piston Ring Set - 4.060 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 12-678-4 Ideal replacement for factory boostProduct Description: Piston Rings American V8 Engine Ring Series 4. 060 in Bore 1. 2 x 1. 2 x 3. 0 mm Thick Standard Tension Steel Nitride 8 Cylinder NPR Piston Rings is a world leader in the production of piston rings. A long time supplier for OEM applications, they also produce a line of performance piston rings designed for top tier performance and reliability. With performance piston rings for a wide range of engines, including popular V8's from