Speed Pro Piston Rings - 4.155 in Bore - File Fit - 1/16 x 1/16 x 3/16 in Thick - Standard Tension Auto Racing Gloves Its cutting-edge dual-chamber design is

Its cutting-edge dual-chamber design is capable of advanced control strategies

1971-1972 Oldsmobile F85

Available for 1 diameter valve cover holes

1968-1974 Ford Ranch Wagon

Speed Pro Piston Rings - 4.155 in Bore - File Fit - 1/16 x 1/16 x 3/16 in Thick - Standard Tension Auto Racing Gloves Its cutting-edge dual-chamber design isSpeed 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