Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The black thin-pad Narrow DynaPro shown here uses a quarter-inch rotor opening and four equal 1.62-inch pistons. Its exact specification lists a 10.75–12.19-inch rotor diameter range. Although neighboring NDPR models can share bore size and external appearance, the full caliper reference and mounting drawing remain the basis for replacement selection. 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: 120-18083-BK
- Caliper type: Narrow Dynapro Radial Mount
- Construction: Billet Aluminium
- Finish: Black Powder Coat
- Piston bores: 1.62 / 1.62 inches
- Piston type: Stainless
- Piston count: 4
- Published piston area: 4.12 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: 4.1 lb
Fitment & Compatibility
Confirm the receiving bracket’s radial centers and lateral offset along with the rotor’s measured diameter. Check that the selected thin pad sits fully on the friction track and that the body clears the hub and wheel. The 4.12-square-inch piston area should remain compatible with the installed master cylinder and axle balance.
With over 20 years of parts experience, PMB Performance can help compare this component with your existing brake assembly. Include its caliper reference and any conversion-kit information.
