Fitment questions?
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Product details
SRP drilled and slotted rotors distinguish this black-caliper Ford 8.8 rear package. Aluminum hats, internal parking shoes and the specified mounting brackets work with the existing five-lug axle, provided its housing end and 2.50-inch offset match the installation drawing. Bill Wood established Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc brake systems, calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications. Individual parts must match the complete brake system and its operating requirements.
Technical Details
Calipers and friction components
- Calipers: Forged Narrow Superlite 4R; 4 pistons per caliper
- Caliper finish: Black Powder Coat
- Body construction: Forged aluminum
- Piston material: stainless
- Caliper mounting: radial
- Hydraulic inlet: 1/8-27 NPT
- Included pad compound: BP-10
- Listed piston bore sizes: 1.12 / 1.12 in
Rotors and mounting dimensions
- Rotors: 12.88 in; 327.15 mm diameter x 1.10 in; 27.94 mm thick; vented Spec-37 Iron
- Friction faces: SRP Drilled & Slotted
- Rotor finish: Black Electro Coat
- Internal vanes: 48 curved
- Hats: aluminum; Black E-Coat; 1.540-inch hat offset
- Rotor/hat wheel-stud clearance patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm
- Hat wheel-stud clearance holes: 0.520 / 0.520 / 0.520 in, corresponding to the listed hat patterns
Kit contents and separate parts
- Manufacturer part number: 140-9223-D
- Supply: one kit with brake components for both sides of the rear axle
- Mounting hardware: included
- Hubs: not included
- Spindles, master cylinder and brake booster: not included
- Hydraulic hoses: not included
- Required axle housing end: 8.8 Ford
- Axle offset: 2.50 in; 63.5 mm
- Disc/drum internal parking assemblies, mounting brackets and rotor hats are supplied.
Fitment & Compatibility
For five-lug Ford 8.8 rear axles with the 2.50-inch offset and housing flange shown in DS-533. Measure the installed axle rather than selecting from the rear-end name alone; aftermarket housings may carry different ends. Confirm the bearing, 2.80-inch center register, stud clearance and available space around the shocks. The multi-pattern hats accommodate compatible existing axle studs; they do not change the axle wheel pattern. Supply suitable hydraulic hoses and parking cables separately; Wilwood lists universal cable kit 330-9371. Nominal minimum wheel diameter: 17 in; 431.8 mm. Compare the actual wheel barrel and spokes with the linked clearance drawing; diameter alone does not establish fit.
Installation documents
WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.
PMB Performance has supported brake and restoration projects for more than 20 years. Share the vehicle and installed hardware with us for help selecting a compatible package.
