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Product details
Drilled/slotted SRP rotors are paired with black four-piston calipers in this Wilwood Strange Engineering floater rear package. Internal shoes provide the mechanical parking-brake function separately from the hydraulic Dynalite calipers. The kit uses a 3.49-inch offset and the floater-specific bracket arrangement, so axle make alone does not establish a match. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California. The company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings, and brake lines for motorsport, street-performance, and specialized applications.
Technical Details
- Manufacturer part number: 140-12420-D
- Type: Forged Dynalite Rear Parking Brake Kit
- Calipers: Forged Dynalite Internal; 4 pistons per caliper; Black Powder Coat.
- Caliper bore sizes: 1.38, 1.38 inches. Piston type: Stainless.
- Included pad compound: BP-10.
- Rotors: 12.19-inch diameter × 0.81-inch thickness; SRP Drilled & Slotted; Iron; Black Electro Coat surface; 32 vanes.
- Rear housing end: Strange Engineering Floater.
- Required axle flange offset: 3.49 inches.
- Bolt pattern: 5 x 5.75 in; 5 x 146.05 mm.
- Included: paired calipers, pads, rotors, mounting brackets and assembly hardware, internal parking-brake shoe assemblies.
- Hydraulic lines and fittings selected separately. No master cylinder, booster or spindles are supplied.
- Parking-brake cables, clevis hardware and adapters are separate.
- Conditional wheel screening size: 15 inches. Use the installation clearance diagram to verify the actual barrel and spoke profile.
Fitment & Compatibility
Compare the flange and register with the dimensional drawing before ordering. DS890 governs how the backing plate and bracket attach to the floater end. Confirm the hat-to-hub mounting pattern and rotor alignment, then check the chosen wheel against the caliper outline. Suitable hydraulic lines, parking-brake cables, clevises and adapters must be arranged separately for the completed chassis.
Wilwood installation documents: Installation instructions; Technical bulletin.
PMB Performance has over 20 years of brake-system experience. Contact us with your vehicle details and installed brake hardware for help confirming the correct arrangement.
California Proposition 65 warning, brake pads only: 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.
