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Product details
Select this black Wilwood Narrow DynaPro brake caliper by the actual radial mounting geometry, not just its appearance. The 4-piston unit uses 1.38/1.38-inch bore dimensions and is configured around a 0.81-inch-wide rotor. Narrow DynaPro uses four stainless pistons, radial mounting and the thin 7812 pad outline. Internal passages and replaceable bridge wear plates are part of the design. Compare rotor width, pad thickness and mounting height with the existing brake before substitution. For motorsport, street-performance and specialized braking applications, Wilwood Engineering designs and manufactures disc brake systems and their individual components. Founded by Bill Wood in 1977 and based in Camarillo, California, Wilwood supplies a range encompassing calipers, rotors, master cylinders, valves, fittings and brake lines, all selected to match the complete system.
Technical Details
- Manufacturer part number: 120-17192-BK
- Component: Narrow Dynapro Radial Mount; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Billet aluminum; Black Powder Coat
- Nominal rotor width: 0.81 inches
- Rotor width range: 0.75–0.86 inches
- Rotor diameter range: 10.75–12.19 inches
- Caliper weight reference: 4.1 lb
- Mounting interface: Radial; mounting centers 4.75 inches
- Mounting-hole diameter: 0.39 inches
- Mount height: 1.61 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Pistons: 4; stainless steel; bore dimensions 1.38/1.38 inches
- Hydraulic piston area: 3.00 square inches
- Dust boots: No
- Brake pad shape: 7812; shape number does not specify a friction compound
Fitment & Compatibility
Match the 4.75-inch radial attachment to the existing bracket, then check caliper centering over the 0.81-inch nominal-width rotor. Axle placement is determined by the engineered brake package, not by a generic caliper designation. The 1/8-27 NPT connection must use the correct fitting and seal. Check the full wheel envelope with the actual bracket and rotor installed.
Wilwood caliper specifications
Contact PMB Performance for a component comparison using the actual caliper, bracket and rotor measurements. Our team has over 20 years of experience with parts and fitment details.
