Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.125" Bore (+.065") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard 6PACK-GMR2 Eibach springs have helped many

Eibach springs have helped many race and championship winners over the last two decades

2001-2009 GMC Sierra 2500 HD

1997-2002 Ford E-150 Econoline Club Wagon

Housing ends are welded into 3/16" wall x 3" O

Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.125" Bore (+.065") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard 6PACK-GMR2 Eibach springs have helped manySpeed 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