NPR American V8 Engine Ring Series Piston Ring Set - 4.135 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder Quarter-Turn Mounting Bracket The MPI difference is seen

The MPI difference is seen in the new spoke structure featuring a rounded edge for increased safety CNC machined after anodization creating a black silver contrast finish

The key when it comes to making a great oil is to think a lot like an engine builder

each bar has a recessed step area with UV-resistant rubber grip pads providing solid traction and stability

Narrow Dynalite

1968-1993 Mercury Cougar

NPR American V8 Engine Ring Series Piston Ring Set - 4.135 in Bore - 1.2 x 1.5 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder Quarter-Turn Mounting Bracket The MPI difference is seenProduct Description: Piston Rings American V8 Engine Ring Series 4. 135 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