Speed Pro Claimer Series Piston Rings - 4.060 in Bore - Drop In - 1/16 x 1/16 x 3/16 in Thick - Standard Tension RG20001XS 1975-1977 Mercury Comet

1975-1977 Mercury Comet

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Dual Out Rear Or Dual Out Side Exit

Big Block Ford

Speed Pro Claimer Series Piston Rings - 4.060 in Bore - Drop In - 1/16 x 1/16 x 3/16 in Thick - Standard Tension RG20001XS 1975-1977 Mercury CometSpeed 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