Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
This anodized Narrow DynaPro is a four-piston radial caliper with 1.62-inch bores and a 0.25-inch rotor opening. The exact part’s specifications list a 10.60-inch minimum rotor diameter, so it should be identified against its own drawing rather than assumed interchangeable with every similarly sized NDPR. Its published piston area is 4.12 square inches. Founded in 1977 by Bill Wood, Wilwood Engineering is based in Camarillo, California. Its disc brake systems and components serve motorsport, street-performance and specialized applications. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among its products, selected according to the complete brake system’s requirements.
Technical Details
- Manufacturer part number: 120-18083
- Caliper type: Narrow Dynapro Radial Mount
- Construction: Billet Aluminium
- Finish: Type III Anodize
- 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: 10.60–12.19 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
Check the caliper reference on the existing brake package before choosing this body. Use the actual rotor diameter, radial bracket height and pad sweep to establish compatibility, especially near the minimum diameter. The 4.75-inch bolt spacing and metric inlet must also match; neither a narrow rotor nor a shared DynaPro family name is sufficient on its own.
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.
