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Product details
Plain vented discs accompany red forged calipers on the five-lug Ford 8.8 conversion. The Forged Dynalite rear disc and parking-brake kit is supplied with red powder-coated 4-piston calipers and 12.19-inch plain-face rotors for Ford 8.8 five-lug, 2.50-inch offset. Since Bill Wood founded the company in 1977, Camarillo, California-based Wilwood Engineering has designed and manufactured disc brake systems for motorsport, street-performance and specialized applications. Its components include calipers, rotors, master cylinders, valves, fittings and brake lines; all must be matched to the intended brake system.
Package and installation requirements
- The one-piece iron drum/rotors incorporate the parking-brake drums; the internal shoes provide a mechanical parking brake independently of the four-piston service calipers.
- Parking-brake cables and hydraulic brake lines are separate. Wilwood references universal cable kit 330-9371; installation can require cable or vehicle modifications.
Technical Details
- Manufacturer part number: 140-7146-R.
- Housing/flange arrangement: 8.8 Ford.
- Axle flange offset: 2.50 in; 63.5 mm.
- Wheel-size guide: 15 in; 381 mm minimum nominal diameter; verify actual template clearance.
- Rotor dimensions: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick.
- Rotor construction: Iron; vented; Plain Face friction surface.
- 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.
- Rotor/hat stud-hole clearance diameters: 0.52 in; 13.21 mm. These are hole sizes, not wheel-stud thread specifications.
- The rotor/hat drilling does not change the vehicle hub or axle wheel bolt pattern.
- Sold as one kit. Mounting hardware is included. Hubs are not included.
- Brake pads are included; use the compound and installation instructions specified for this rotor package.
- Spindles, master cylinder, brake booster and hydraulic brake lines are not included.
- Calipers: 4 pistons; forged aluminum; stainless steel pistons.
- Caliper attachment: lug mount; 1/8-27 NPT hydraulic inlet.
- Caliper finish: Red Powder Coat.
Fitment & Compatibility
This conversion is arranged for the Ford 8.8-inch rear axle with five-lug wheel mounting and the specified 2.50-inch axle offset. A four-lug axle or an assembly with different shafts and offset must not be assumed compatible. Use DS426 together with the axle worksheet to identify what is actually installed. The kit combines four-piston service braking with internal shoes in the parking-brake drums; the hydraulic calipers do not perform the mechanical parking function. Provide the housing and axle measurements when requesting assistance; the installed hardware determines compatibility. Check wheel bolt-circle compatibility, parking-cable attachment and the flexline route before assembly. Each of those checks matters independently of the Ford 8.8 differential designation.
Measure clearance at both the caliper and rotor using the instruction-sheet drawing. Wheels with the same nominal diameter can have different internal profiles.
Manufacturer references
Bring your vehicle and brake-system questions to PMB Performance. With over 20 years of experience, we can help identify the measurements and installation details that determine the correct kit.
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.
