NPR American V8 Engine Ring Series Piston Ring Set - 4.065 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder Cooling & Heating Deals Four-into-two-into-one configuration combined with "stepped"

Four-into-two-into-one configuration combined with "stepped" primary tubes delivers increased torque

090" thick wear plate welded into place which provides a positive cam stop as well as stiffens the cover to stand up to severe am loads

Hydraulic - Magnum: High performance

Block and head surface problems can be found by the racer who checks everything

and oval track

NPR American V8 Engine Ring Series Piston Ring Set - 4.065 in Bore - 1.2 x 1.2 x 3.0 mm Thick - Standard Tension - Nitride - 8-Cylinder Cooling & Heating Deals Four-into-two-into-one configuration combined with "stepped"Product Description: Piston Rings American V8 Engine Ring Series 4. 065 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