Wilwood Rear FDLI Kit, Chevrolet 12-Bolt Rear Axles, Staggered Shocks and 2.75 / 2.81-inch Offset - Red Calipers, 12.19-inch Drilled/Slotted Rotors

Red FDLI calipers and SRP rotor hats form this rear service-and-parking brake package for the specified Chevrolet 12-bolt axle. Opposite fore/aft caliper placement accommodates the intended staggered-shock layout without making the kit universal to other axle ends. 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. The complete braking arrangement determines which individual components are appropriate.

Technical Details

Calipers and friction components

• Calipers: Forged Dynalite Internal; 4 pistons per caliper
• Caliper finish: Red Powder Coat
• Body construction: Forged aluminum
• Piston material: stainless
• Caliper mounting: lug
• Hydraulic inlet: 1/8-27 NPT
• Included pad compound: BP-10
• Listed piston bore sizes: 1.38 / 1.38 in

Rotors and mounting dimensions

• Rotors: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick; vented Iron
• Friction faces: SRP Drilled & Slotted
• Rotor finish: Black Electro Coat
• Internal vanes: 32 straight
• Rotor/hat wheel-stud clearance patterns: 5 x 4.75 in; 5 x 120.65 mm

Kit contents and separate parts

• Manufacturer part number: 140-9315-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: 12 Bolt
• Axle offset: 2.75 in; 69.85 mm; 2.81 in; 71.37 mm
• Includes internal drum parking-brake assemblies and one-piece rotor/hat assemblies.

Fitment & Compatibility

For the Chevrolet 12-bolt housing and 2.75/2.81-inch axle-offset configuration with staggered shock mounts shown in DS-540. Use original C-clip axle retention; C-clip eliminators and special aftermarket housing ends are excluded. The right caliper mounts behind the axle and the left caliper ahead of it. Treat the modified-vehicle entries in the table below as conditional: their front Ridetech spindle references do not verify this rear axle. Match flange and axle dimensions, shock space and wheel clearance before selection. Hoses, cables and clevises are separate; universal parking cable kit 330-9371 is available. Nominal minimum wheel diameter: 15 in; 381 mm. Compare the actual wheel barrel and spokes with the linked clearance drawing; diameter alone does not establish fit.

Installation documents

• Installation instructions
• Technical bulletin

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.

Vehicle Applications

Application Notes

1. For OE C-Clip axles only. Does not support Special End or C-Clip Eliminator modifications
2. Hats drilled for 7/16", 1/2" & 12mm studs.
3. Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
4. Kit designed for staggered shock mount rear ends: R/H caliper is rear mount, L/H caliper is front mount.
5. Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
6. Universal Parking Brake cable kit, may require modifications to cable or vehicle to install.
7. Line kit included (manufacturer): None