− Decrease quantity for Brake Caliper, GP320, 4 Piston, 1.25 in. Pistons, Compatible with 9.00 -11.50 in. O.D., 3.50 in. Mount Center, Side, Aluminum, Gray Anodized, Each Quantity + Increase quantity for Brake Caliper, GP320, 4 Piston, 1.25 in. Pistons, Compatible with 9.00 -11.50 in. O.D., 3.50 in. Mount Center, Side, Aluminum, Gray Anodized, Each Add to cart