Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
This Narrow DynaPro is the anodized 1.75-inch-bore option for a quarter-inch-wide rotor. Its four pistons give a published area of 4.80 square inches, a specification that matters when choosing master-cylinder size and maintaining brake balance. The body is a radial-mount component with 4.75-inch centers and a metric inlet. Based in Camarillo, California, Wilwood Engineering was founded by Bill Wood in 1977. The manufacturer produces disc brake systems and components for motorsport, street-performance and specialized applications, with a range covering calipers, brake rotors, master cylinders, valves, fittings and brake lines. Individual components are chosen to suit the complete brake system.
Technical Details
- Manufacturer part number: 120-18054
- Caliper type: Narrow Dynapro Radial Mount
- Construction: Billet Aluminium
- Finish: Type III Anodize
- Piston bores: 1.75 / 1.75 inches
- Piston type: Stainless
- Piston count: 4
- Published piston area: 4.80 square inches
- Dust boots: No
- Nominal rotor width: 0.25 inch
- Rotor thickness limits: 0.25–0.25 inches
- Rotor diameter limits: 10.75–12.19 inches
- Mounting style: Radial
- Handedness: Not restricted to one side; correct mounting and bleed orientation required
- Mounting centers: 4.75 inches
- Mounting-hole size: 0.39 inch
- Mount height: 1.61 inch
- Hydraulic inlet thread: M10 x 1.25
- Required pad shape: 7812
- Published pad area: 6.36 square inches
- Published pad volume: 2.1 cubic inches
- Manufacturer-listed component weight: 3.6 lb
Fitment & Compatibility
Confirm the original caliper specification rather than ordering by appearance. A rotor within the 10.75–12.19-inch diameter range still needs the correct offset and pad sweep, and the bracket must position the body at the 1.61-inch mount height. Check the narrow pad arrangement and leave room for the hydraulic fitting throughout suspension travel.
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.
