Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.250" Bore (+.030") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard YA0859 1983-1991 Chevrolet G10

1983-1991 Chevrolet G10

2011-2013 Mercedes-Benz E350

These machined installation hubs are CNC machined from 6061 billet aluminum

Single Plane with Isolated Plenum

Adjustable by pass pressure using optional springs

Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.250" Bore (+.030") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard YA0859 1983-1991 Chevrolet G10Speed Pro designs and engineers pistons to meet the most demanding street performance and racing conditions. In combination, we draw upon more than 100 years of Speed Pro engine mastery to enhance the piston ring and its seal. Our Speed Pro(R) brand is recognized for being a winner in every form of racing, and is the proven horsepower leader in oval track and drag racing. Hell Fire(R) Rings: Speed Pro Hell Fire rings, manufactured from a specially