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 YA0801ABP Flange and collector may be

Flange and collector may be trimmed for further weight reduction

yet they are still able to easily flow numbers that are in raised runner head territory

75 in Core Radiators

Vent has a 1/2" wide mounting flange and a centered outlet that accepts most 1-1/4" helmet hoses

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 YA0801ABP Flange and collector may beProduct 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