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Product details
Black FNSL4R calipers and GT slotted rotor rings create this rear upgrade for the listed Camaro and Firebird. Aluminum hats retain the original internal parking brake and match the specified 2.75-inch axle offset. Wilwood Engineering designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977; its Camarillo, California operation serves motorsport, street-performance and specialized applications. Every component must suit the complete brake system in which it operates.
Technical Details
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: GT Slotted
- Rotor finish: Black Electro Coat
- Internal vanes: 48 curved
- Hats: aluminum; Black E-Coat; 1.320-inch hat offset
- Rotor/hat wheel-stud clearance patterns: 5 x 4.75 in; 5 x 120.65 mm
- Hat wheel-stud clearance holes: 0.520 in, corresponding to the listed hat patterns
Kit contents and separate parts
- Manufacturer part number: 140-9830
- 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
- Axle offset: 2.75 in; 69.85 mm
- Retains the OE parking brake and uses 1.320-inch-offset aluminum rotor hats.
- Separate hose kit application reference: 220-9882; verify the vehicle connections and routing
Calipers and friction components
- Calipers: Forged Narrow Superlite 4R; 4 pistons per caliper
- Caliper finish: Black 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: 1.12 / 1.12 in
Fitment & Compatibility
The table below covers the 1998–2002 Camaro and Firebird rear applications. Match the original axle and 2.75-inch offset, retaining the factory internal parking-brake mechanism. Aluminum hats fit the existing five-lug axle arrangement; they do not supply replacement hubs or axle shafts. Inspect the parking hardware and check DS-561 for the wheel envelope and caliper alignment. Hydraulic hoses are separate; the exact kit page lists 220-9882 for these rear applications, and the connections and routing should be verified on the vehicle. 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.
With over 20 years of brake-system and restoration experience, PMB Performance can help you review the application, wheel clearance and remaining parts for the installation.
Vehicle Applications
| Years | Make | Model | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|
| 1998-2002 | Chevrolet | Camaro | Disc Brake Rear | Disc | Disc | Rear Kit | 1, 2 |
| 1998-2002 | Pontiac | Firebird | All | Disc | Disc | Rear Kit | 1, 2 |
Application Notes
- Line kit included (manufacturer): None
- Rear line-kit reference: 220-9882
