Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
A 0.38-inch rotor-width specification and 1.38/1.38-inch piston bores identify this Wilwood Narrow DynaPro brake caliper. The anodized finish is applied to the exact component described below; match the mounting bracket before replacement. 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. Calipers, brake rotors, master cylinders, valves, fittings and brake lines are among the disc brake components designed and manufactured by Wilwood Engineering. Bill Wood founded the company in 1977; it is based in Camarillo, California. The range serves motorsport, street-performance and specialized systems, with component selection determined by the full brake arrangement.
Technical Details
- Manufacturer part number: 120-17193
- Component: Narrow Dynapro Radial Mount; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Billet aluminum; Type III Anodize
- Nominal rotor width: 0.38 inches
- Rotor width range: 0.38–0.38 inches
- Rotor diameter range: 10.75–12.19 inches
- Caliper weight reference: 4.1 lb
- 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
- 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
Fitment & Compatibility
Compare the caliper drawing with your radial bracket before ordering. The 4.75-inch mounting centers and 1.38/1.38-inch bores must suit the installed rotor offset and hydraulic system. Axle placement is determined by the engineered brake package, not by a generic caliper designation. A suitable pad sweep and clearance inside the wheel must be verified independently of rotor width.
Wilwood caliper specifications
For a modified brake system, provide its existing component specifications along with the vehicle details. PMB Performance has over 20 years of parts and fitment experience to help check the assembly before purchase.
