Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The left hard-anodized Dynapro 6A uses a six-piston differential arrangement in a reinforced forging. This is the 0.38-inch nominal rotor-width version, with 1.62/1.38/1.38-inch stainless bores and type 6712 pads. With a range spanning calipers, brake rotors, master cylinders, valves, fittings and brake lines, Wilwood Engineering designs and manufactures complete disc braking systems and their components. Bill Wood founded the Camarillo, California-based company in 1977 for a market now covering motorsport, street-performance and specialized applications.
Technical Details
- Manufacturer part number: 120-13431. Component: Forged Dynapro 6A Lug Mount caliper.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- Caliper weight: approximately 4.9 lb.
- Mounting: lug, 5.25-inch centers; left hand orientation. Mount holes: 0.39 inch; height: 2.03 inches.
- Rotor compatibility: nominal width 0.38 inch; diameter 10.00–13.00 inches. Specified rotor-width limits: 0.25–0.38 inch.
- Piston dust boots: not fitted.
- Body: forged aluminum; finish: Type III anodize.
- Compatible brake pad shape: 6712; choose the required compound for the brake system.
- Hydraulic inlet thread: 1/8-27 NPT. Use a fitting with the correct thread and sealing seat.
- Pistons: 6 stainless steel; bore specification: 1.62/1.38/1.38 inches. Effective piston area: 5.06 sq in.
Fitment & Compatibility
Match the narrow rotor cavity to the actual rotor thickness and compare the master-cylinder requirements. The bracket must locate the left caliper on 5.25-inch lug centers without placing the pads beyond the rotor’s friction annulus.
PMB Performance brings more than 20 years of experience to brake-part selection. Include the existing caliper, rotor and mounting details when requesting help with this assembly.
