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 H Beam Rod One year warranty from the

One year warranty from the date of purchase

2 Toggles / 1 Momentary Push Button

considerably increasing noise reduction

Spread port heads have the center exhaust ports spread apart 5/8'' over stock L98 GM heads

Tachometer Mounting Base

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 H Beam Rod One year warranty from theSpeed 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