Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.125" Bore (+.030") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard 1425011 Founded in 1911

Founded in 1911

Ready to rock

10-1/2 in Long

For EFI applications use regulator P/N 13305 or P/N 13134

Metering Valve

Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.125" Bore (+.030") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard 1425011 Founded in 1911Speed 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