Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
Red powder-coated FNSL4R calipers give this snap-ring-bearing Mopar/Dana package a visible finish distinction alongside SRP drilled and slotted rotors. Its 12.88-inch rear service brakes share the installation with an independent internal-shoe parking mechanism, requiring the correct 2.36-inch axle geometry. From its base in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Founded in 1977 by Bill Wood, its range covers calipers, brake rotors, master cylinders, valves, fittings and brake lines. Component selection must account for the requirements of the complete brake system.
Technical Details
Calipers and friction components
- Calipers: Forged Narrow Superlite 4R; 4 pistons per caliper
- Caliper finish: Red 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: 1.38 / 1.38 in
Kit contents and separate parts
- Manufacturer part number: 140-9222-DR
- 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: Mopar/Dana
- Axle offset: 2.36 in; 59.94 mm
- Internal drum parking-brake assemblies and bearing retainers are included; axle shafts and bearings are not supplied.
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
Fitment & Compatibility
Match the Mopar 8-3/4 or Dana 60 housing end and 2.36-inch axle offset before ordering. This version requires non-adjustable snap-ring Green bearings: Mopar MO400, Strange A1022 or Moser 9400M. The RP400 bearing with a pressed-on five-hole retainer is not compatible. Verify bearing diameter, flange pattern, axle register and shock clearance against DS-532; relocation of shocks may be necessary. The maximum axle flange is 6.61 inches with the specified chamfer. Hydraulic hoses, fittings and parking cables are separate; the universal 330-9371 cable kit requires application-specific installation. 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.
Our team at PMB Performance draws on 20+ years of brake and restoration work. We can help check the mounting requirements and component choices for your build.
