NPR American V8 Engine Ring Series Piston Ring Set - 4.075 in Bore - 1.5 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder COM3204 Performer RPM High-Compression

Performer RPM High-Compression

they include the dyno data of each one

More positive steering feel

Mopar B / RB-Series 1958-79

and can reduce rotating weight by up to 8 lbs

NPR American V8 Engine Ring Series Piston Ring Set - 4.075 in Bore - 1.5 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder COM3204 Performer RPM High-CompressionProduct Description: Piston Rings American V8 Engine Ring Series 4. 075 in Bore 1. 5 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