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What size pistons should my front drum brake cylinders be?

joe smith

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67 Coronet RT with its original front drum brakes, 11" X 3".. I see two piston sizes, 7/8" and 1 1/8".. I want to make sure whats on it is correct? Anybody know?? TY
 
R413 is correct, 1 1/8" Front for the 11" x 3",
15/16" Rear for the 11" x 2 1/2".

If you need or want, I have ++ N.O.S. ++ Asbestos ++
Front & Rear Brakes Shoes, Wheel Cylinders, Brake Hardware, Brake Hoses, Wheel Bearings & Seals, and ++ N.O.S. ++ U.S.A. made Brake Drums........
Yours, Craig...
 
Thanks for the help... I will send you a PM Craig
 
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