Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This black Narrow DynaPro is configured with four 1.25-inch stainless pistons and a thin, quarter-inch rotor opening. It supplies a 2.46-square-inch hydraulic piston area within the 4.75-inch radial mounting format. The correct choice depends on the complete brake design, including the master cylinder and the rotor’s friction-track position. 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: 120-18061-BK
- Caliper type: Narrow Dynapro Radial Mount
- Construction: Billet Aluminium
- Finish: Black Powder Coat
- Piston bores: 1.25 / 1.25 inches
- Piston type: Stainless
- Piston count: 4
- Published piston area: 2.46 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: 3.2 lb
Fitment & Compatibility
When servicing an existing package, compare the old caliper’s bore size before matching its color. The bracket must set the body at the specified mount height and center it laterally over the rotor. Check the pad thickness, fitting thread and wheel barrel separately; none is confirmed by radial spacing alone.
For help identifying the correct brake component, provide the caliper markings and installation dimensions. PMB Performance has over 20 years of experience with parts and brake-system details.
