Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.065") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Low GBDXS2 ATF and mineral oil

ATF and mineral oil

Increases power and miles per gallon by burning excess exhaust emissions

The TandemX Pump

racing pedal assemblies and master cylinders

 captures the eclectic mix of breakthrough products AMP Research has brought to the market since its founding in 1980

Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.065") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Low GBDXS2 ATF and mineral oilSpeed 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