NPR American V8 Engine Ring Series Piston Ring Set - 4.055 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 53408-53 900 in Valve

900 in Valve

534 to greatly improve exhaust flow and power

Precision machined from chromemoly steel then black oxided

GM's popular LS engines are finding their way into a large variety of vehicles

STX Headset Expansion Kits

NPR American V8 Engine Ring Series Piston Ring Set - 4.055 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder 53408-53 900 in ValveProduct Description: Piston Rings American V8 Engine Ring Series 4. 055 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