Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.045") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard PD150K 2 & 4 wheel drives

2 & 4 wheel drives and all wheelbases

Typical diesel commercial vehicle requires one bottle

Oragnic / Carbon

Hurst Mastershift 3-Speed

and other applications in which clearance is limited

Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.045") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard PD150K 2 & 4 wheel drivesSpeed 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 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 Rings: Speed Pro Hell Fire rings, manufactured from a specially hardened