NPR American V8 Engine Ring Series Piston Ring Set - 4.145 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder DER13210 Cap is a suitable choice

Cap is a suitable choice for most street driven vehicles

E85 and forced induction and power adder combinations

Repeatability

two organic friction discs

NPR American V8 Engine Ring Series Piston Ring Set - 4.145 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder DER13210 Cap is a suitable choiceProduct Description: Piston Rings American V8 Engine Ring Series 4. 145 in Bore 1. 2 x 1. 5 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