Wilwood's Forged Narrow Superlite 4R rear big brake kit puts a four piston radial mount caliper with 1.12 inch bores and 1.98 square inches of piston area behind each rear wheel, clamping a 12.88 by 1.10 inch Spec-37 iron rotor with GT 48 curved vanes. This version pairs Wilwood's SRP drilled and slotted rotors, dynamically balanced and black E-coated, with red powder coated calipers, BP-10 pads offering 8.2 square inches of pad area and black E-coated aluminum hats that carry the parking brake provision. The kit keeps the factory parking brake, the OE master cylinder output and ABS where fitted, so it upgrades the rear axle without forcing a change to the rest of the system. A 17 inch minimum wheel diameter is required for clearance.
| Type | Rear big brake kit (Forged Narrow Superlite 4R, for OE parking brake) |
| Position | Rear |
| Caliper | FNSL4R forged, 4 piston, radial mount, 1.12 in bores, 1.98 sq in piston area |
| Caliper Finish | Red powder coat |
| Rotor | 12.88 x 1.10 in, Spec-37 iron, GT 48 curved vane, SRP drilled and slotted, black E-coat, dynamically balanced |
| Pads | BP-10 compound, 8.2 sq in pad area |
| Hat | Aluminum, black E-coat, parking brake hat |
| Retains | OE parking brake, OE master cylinder output and ABS where fitted |
| Axle | OEM rear end, 2.75 in axle offset |
| Minimum Wheel | 17 in diameter |
| Pairs With | Brake line kit 220-9882, o-ring kit 130-2579, bridge bolt kit 230-17553 |
| Quantity | 1 kit |
| Part Number | 140-9830-DR |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1998-2002 | Chevrolet | Camaro | All |
| 1998-2002 | Pontiac | Firebird | All |
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