GP 310 4 Piston Motorcycle Rear Brake Caliper, 1984-up Harley Davidson, 1.25" / 1.25" Piston Bores, 11.5" Rotor Dia., 0.25" Disc Width, Right Hand, Standard 3.50" Mount Spacing, Black Powder Coat Finish|Wilwood GP 310 4 Piston Motorcycle Rear Brake Caliper 1984-up Harley Davidson.
