Speed Pro Piston Rings - 4.145 in Bore - File Fit - 1/16 x 1/16 x 3/16 in Thick - Standard Tension RS004C1811 John Surtees

John Surtees

1965-1965 GMC 1000 Series

Vehicle Applications: 1971-1975 Chevrolet Bel Air CID 283

571 in Insert OD

Speed Pro Piston Rings - 4.145 in Bore - File Fit - 1/16 x 1/16 x 3/16 in Thick - Standard Tension RS004C1811 John SurteesSpeed 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