The Wilwood 120-11130 is a Forged Superlite Internal (FSLI) four-piston caliper for 1.25 in discs, with 1.38 in pistons. The manufacturer lists it in an anodized finish, with black (120-11130-BK) and red (120-11130-RD) versions also offered, and as a universal-mount caliper. Its aluminum body is forged, and its four pistons are stainless steel with a combined piston area of 3.00 sq in, which spreads clamping load across a larger pad area than a smaller stock-style caliper.
Choose this caliper over stock when you need more braking capacity for track days, autocross, or sprint racing, or when you want a forged, serviceable caliper that can be refreshed with replacement pistons instead of a full unit swap. The manufacturer lists replacement pistons 200-7516 (1.030 in length) and 200-7554 (1.050 in length), so a worn bore can be rebuilt rather than discarding the body. Mounting and rotor clearance should be verified against your hub and wheel package before you order, because the published rotor dimensions are not consistent across the information available. Confirm the mounting-center spacing and maximum rotor outside diameter with the manufacturer before you fabricate brackets.
The manufacturer lists the 120-11130 in an anodize finish, with a black version (120-11130-BK) and a red version (120-11130-RD) also available. Pick the finish by part number so you order the exact version you want.
The manufacturer lists replacement pistons 200-7516 and 200-7554, both with a 1.38 in outside diameter. The 200-7516 is 1.030 in long and the 200-7554 is 1.050 in long, so confirm which length your rebuild calls for before ordering.
