Fitment questions?
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Product details
Black six-piston AERO6 calipers and 14-inch GT rotors suit the specified Superformance GT40 rear installation. The existing parking mechanism is retained. Wilwood Engineering has designed and manufactured disc brake systems since Bill Wood founded it in 1977. Its Camarillo, California operation supplies calipers, master cylinders, brake rotors, valves, fittings and lines for specialized, street-performance and motorsport applications. Each component must be chosen to match the complete brake system.
Technical Details
- Manufacturer: Wilwood
- Manufacturer part number: 140-15498
- Kit classification: Rear Brake Kits - Street Performance
- Axle position: Rear Kits
- Brake Type: Disc; Parking
- Selling unit: Sold as a kit.
- Master Cylinder Included: No
- Brake Booster Included: No
- Brake Lines Included: No
- Separately specified hydraulic components: 220-7056; 220-7699; 220-8307
- Minimum wheel diameter guidance; verify clearance drawing: 18 in; 457.2 mm
- Spindle Included: No
- Mounting Hardware Included: Yes
- Separate wheel hubs included: No
- Rotor Outside Diameter: 14.00 in; 355.6 mm
- Rotor Thickness: 1.25 in; 31.75 mm
- Rotor Material: Spec-37 Iron
- Surface Type: GT Slotted
- Rotor construction: Vented
- Specified rotor-hat mounting pattern: 6 x 4.25 in; 6 x 107.95 mm
- Rotor-hat mounting-hole clearance diameter (not stud thread): 0.530 in; 13.46 mm
- Rotor surface finish: Black Electro Coat
- Rotor vane / construction reference: 72 CV
- Hat material: Aluminum
- Hat finish: Black E-Coat
- Hat offset (not axle-flange offset): 1.270 in
- Pistons per service caliper: 6
- Service-caliper piston material: Stainless
- Service-caliper mounting: Radial
- Caliper body construction: Forged aluminum
- Caliper Color: Black
- Caliper Finish: Black Powder Coat
- Caliper Inlet Port Diameter: 1/8-27 NPT
- Caliper family: AERO6
- Pad compound: BP-20
Fitment & Compatibility
This rear kit is specific to the documented Superformance GT40 installation, not general original or replica GT40 compatibility. Six-piston AERO6/Aerolite 6R calipers provide hydraulic service braking. The 14.00 × 1.25-inch Spec37 GT rotor rings attach to separate aluminum hats with the specified six-on-4.25-inch mounting interface. Retain the existing parking mechanism. No hydraulic hoses are included; select appropriate lines, end fittings and length for the actual car. Check the hat/hub interface, caliper alignment and wheel drawing.
Wilwood product specifications · Installation instructions
Ask PMB Performance for help comparing the installation requirements. We have more than 20 years of experience working with brake parts and fitment.
Manufacturer warning — brake pads only: WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov.
