Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
For a brake assembly requiring the 1.10-inch rotor-width version, this Wilwood Aero4-DS brake caliper provides the black configuration. Compare its radial mount and piston area with the component being replaced. The Aero4-DS combines four hydraulic pistons with dust wiper seals. Its radial attachment must be aligned to the rotor centerline with the correct bracket; the caliper alone does not establish a wheel or vehicle fit. Based in Camarillo, California, Wilwood Engineering has its origins in the company Bill Wood founded in 1977. Its designs and manufactured disc brake products cover calipers and rotors alongside master cylinders, valves, fittings and lines. Motorsport, street-performance and specialized installations each require components selected for the complete system.
Technical Details
- Manufacturer part number: 120-15598-BK
- Component: Aero4-DS Radial Mount; one individual caliper
- Placement: Universal mounting orientation; verify axle position
- Construction and finish: Forged aluminum; Black Powder Coat
- Mounting interface: Radial; mounting centers 7.09 inches
- Mounting-hole diameter: 0.45 inches
- Mount height: 2.09 inches
- Hydraulic inlet thread: 1/8-27 NPT
- Nominal rotor width: 1.10 inches
- Rotor width range: 1.00–1.10 inches
- Rotor diameter range: 12.19–15.00 inches
- Caliper weight reference: 6.9 lb
- Pistons: 4; stainless steel; bore dimensions 1.38/1.38 inches
- Hydraulic piston area: 3.00 square inches
- Dust boots: Yes
- Brake pad shape: 6617; shape number does not specify a friction compound
Fitment & Compatibility
Match the 7.09-inch radial attachment to the existing bracket, then check caliper centering over the 1.10-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
PMB Performance has over 20 years of experience with parts and brake fitment. Send the installed rotor dimensions, bracket measurements and hydraulic details so we can help compare the component before you order.
