The Wilwood AERO4 big brake kit is a bolt on rear upgrade built around forged AERO4 calipers and 14.25in rotors. The GT vane rotors run a plain face for smooth, quiet street performance. Calipers wear a black powder coat. It ships as a complete kit with calipers, rotors, mounting brackets, brake pads and hardware.
| Type | Big brake kit (truck kit) |
| Caliper | Wilwood AERO4 |
| Position | Rear |
| Rotor Diameter | 14.25in |
| Rotor | GT vane (plain) |
| Caliper Finish | Black powder coat |
| Part Number | 140-9838 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2005 | Chevrolet | Avalanche 1500 | Base |
| 2005-2006 | Chevrolet | Avalanche 1500 | LS |
| 2005-2006 | Chevrolet | Avalanche 1500 | LT |
| 2002-2003 | Chevrolet | Avalanche 1500 | North Face |
| 2002-2003 | Chevrolet | Avalanche 1500 | On Road Edition |
| 2003 | Chevrolet | Avalanche 1500 | WBH |
| 2004-2006 | Chevrolet | Avalanche 1500 | Z66 |
| 2002-2006 | Chevrolet | Avalanche 1500 | Z71 |
| 2001-2004 | Chevrolet | Silverado 1500 | Base |
| 2004-2006 | Chevrolet | Silverado 1500 | Hybrid |
| 2001-2005 | Chevrolet | Silverado 1500 | LS |
| 2001-2005,2007 | Chevrolet | Silverado 1500 | LT |
| 2007 | Chevrolet | Silverado 1500 | LTZ |
| 2005 | Chevrolet | Silverado 1500 | SS |
| 2002-2004 | Chevrolet | Silverado 1500 | WT |
| 2004 | Chevrolet | Silverado 1500 | Z71 Off-Road |
| 2000-2001,2006 | Chevrolet | Suburban 1500 | Base |
| 2000-2006 | Chevrolet | Suburban 1500 | LS |
| 2000-2006 | Chevrolet | Suburban 1500 | LT |
| 2004-2006 | Chevrolet | Suburban 1500 | Z71 |
| 2000-2001,2006 | Chevrolet | Tahoe | Base |
| 2000-2006 | Chevrolet | Tahoe | LS |
| 2000-2006 | Chevrolet | Tahoe | LT |
| 2003-2006 | Chevrolet | Tahoe | Z71 |
| 2002-2004 | GMC | Sierra 1500 | Base |
| 2001 | GMC | Sierra 1500 | C3 |
| 2002 | GMC | Sierra 1500 | HT |
| 2005-2006 | GMC | Sierra 1500 | Hybrid |
| 2001-2003 | GMC | Sierra 1500 | SL |
| 2001-2005 | GMC | Sierra 1500 | SLE |
| 2001-2005 | GMC | Sierra 1500 | SLT |
| 2002-2004 | GMC | Sierra 1500 | WT |
| 2001 | GMC | Yukon | Denali |
| 2006 | GMC | Yukon | SL |
| 2000-2006 | GMC | Yukon | SLE |
| 2000-2006 | GMC | Yukon | SLT |
| 2001 | GMC | Yukon XL 1500 | Denali |
| 2006 | GMC | Yukon XL 1500 | SL |
| 2000-2006 | GMC | Yukon XL 1500 | SLE |
| 2000-2006 | GMC | Yukon XL 1500 | SLT |
