Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The 7.09-inch radial pattern identifies the attachment layout of this Wilwood AERO4. This black caliper has 4 pistons, 1.12-inch bores and a 0.81-inch nominal rotor-width specification. Wilwood Engineering’s disc brake range includes calipers, rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977 in California; it is based in Camarillo and serves motorsport, street-performance and specialized brake applications.
AERO4 uses four pistons in a radial-mount body with internal fluid ports. The caliper must be positioned for full pad contact and adequate wheel clearance; rotor diameter alone cannot establish either condition.
Technical Details
- Manufacturer part number: 120-14004-BK
- Component: Wilwood AERO4; one caliper
- Body and finish: Forged aluminum; Black Powder Coat
- Dust boots: No
- Piston arrangement: 4 pistons; 1.12-inch bores; stainless steel
- Hydraulic piston area: 1.98 square inches, as specified by Wilwood
- Mounting: universal side configuration; Radial; 7.09-inch centers; 0.45-inch mounting holes
- Mount height: 2.09 inches
- Fluid inlet: 1/8-27 NPT
- Pad shape: Wilwood type 6617; compound selected separately
- Rotor width: 0.81-inch nominal; 0.75–0.81-inch permitted range
- Rotor diameter range: 12.19–15.00 inches
Fitment & Compatibility
Measure the available space at both sides of the rotor, including its hat. Confirm mounting geometry and piston area; rotor width by itself cannot establish a complete brake package.
This listing covers one caliper. Match the brake pads, rotor, hose and mounting arrangement to the complete brake system.
With over 20 years of experience, PMB Performance can help compare piston configuration and mounting geometry. Share the existing brake package and measured rotor dimensions before ordering.
