Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The 2.00-inch-bore GM Metric iron caliper supplies a smaller piston-area choice for a suitable racing or disc-conversion assembly. Its single stainless piston and purpose-sized casting are selected together. The body uses the D154 pad format and floating mount, with no left/right restriction when the inlet and bleeder are positioned correctly. Bill Wood founded Wilwood Engineering in 1977; the company is based in Camarillo, California. Wilwood designs and manufactures disc brake systems and components, from calipers and brake rotors to master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications; selection depends on the complete brake system.
Technical Details
- Manufacturer part number: 120-9333
- Caliper type: GM-Metric-Iron Single Piston Floater
- Construction: Cast Iron
- Finish: Bare
- Piston bores: 2.00 inches
- Piston type: Stainless
- Piston count: 1
- Published piston area: 3.14 square inches
- Dust boots: No
- Nominal rotor width: 1.04 inch
- Rotor thickness limits: 0.81–1.04 inches
- Rotor diameter limits: 11.00–11.75 inches
- Mounting style: Floating
- Handedness: Not restricted to one side; correct mounting and bleed orientation required
- Mounting centers: 5.46 inches
- Mounting-hole size: 0.69 inch
- Mount height: 0.48 inch
- Hydraulic inlet thread: M10 x 1.50
- Required pad shape: D154
- Published pad area: 8.7 square inches
- Published pad volume: 2.9 cubic inches
- Manufacturer-listed component weight: 4.3 lb
Fitment & Compatibility
Check the rotor’s diameter, thickness and offset along with the 5.46-inch mounting pattern. The smaller piston area changes brake balance and must agree with the full hydraulic design. Installation requires Wilwood’s separately supplied hardened slide-pin kit 230-0619; confirm pad choice, line fitting and the applicable competition rules.
PMB Performance brings over 20 years of brake and parts experience to selection questions. Send the existing caliper reference and brake-package details for help checking compatibility.
