Wilwood Rear Caliper and Rotor Kit, Black FDLI - Chevrolet 12-Bolt Rear Axles, Staggered Shocks and 2.75 / 2.81-inch Offset, 12.19-inch Plain Rotors

This Chevrolet 12-bolt rear conversion uses black FDLI calipers and plain 12.19-inch rotors for the staggered-shock configuration. The right caliper sits behind the axle and the left ahead of it, with internal shoes providing the parking brake. Wilwood Engineering was founded in 1977 by Bill Wood and is based in Camarillo, California. It designs and manufactures disc brake systems and components for motorsport, street-performance and specialized applications, with calipers, brake rotors, master cylinders, valves, fittings and brake lines in its range. Select the individual parts around the requirements of the entire braking system.

Technical Details

Kit contents and separate parts

• Manufacturer part number: 140-9315
• 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.

Calipers and friction components

• Calipers: Forged Dynalite Internal; 4 pistons per caliper
• Caliper finish: Black 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: Plain Face
• Rotor finish: Plain
• Internal vanes: 32 straight
• Rotor/hat wheel-stud clearance patterns: 5 x 4.75 in; 5 x 120.65 mm

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 offers parts-selection support backed by more than 20 years in brake systems and restoration. Let us help review the details of your vehicle and installation.

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