Rear Brake Kit – Part No: 140-9838
Call (805) 388-1188
AERO4 Big Brake Truck Rear Brake Kit
Prod #: 140-9838
Price: $1,959.94
*NOTE: Brake Line Kit Needed.
220-9886 $77.72
220-11196 $118.83
Rear Brake Kit - Rear Kit

Kit Summary
Rear End Axle: OEM
Axle Offset: 0
Mount Type: Radial
Caliper Type: 4 - Black Powder Coat
Rotor Diameter: 14.25
Min Wheel Diameter Req'd*: 18
*This Brake Kit may fit 18-inch wheels. Please refer to the wheel clearance diagram to check to see if it will fit your specific wheel. Wheel Clearance Diagram

AERO4 Big Brake Truck Rear Brake Kit

AERO4 Big Brake rear axle kits replace the factory disc brakes and use the OE parking brake assembly as a compliment to front big brake upgrades on late model trucks and SUV’s. High capacity braking from the AERO4 calipers, BP-10 compound pads, and oversized rotors are matched to the OE master cylinder output, ABS function, and individual vehicle bias requirements. Enhanced brake performance, increased durability, and high-tech style compliment big wheel, tire, and suspension upgrades on customized vehicles, tow rigs, and all others with increased brake requirements from high GVW.


Fitment & Installation Details

AERO4 Big Brake Truck Rear Brake Kit Assembly Schematic


Rear End / Axle Housing Flange
Confirm The Configuration!

OEM Flange
Confirm Offset Measurement!

AXLE FLANGE CROSS-SECTION
Search Rear Kits By Rear End/Axle Offset
caution AXLE OFFSET: 0
Check the diagram above and verify this measurement. This kit may be available in several different offsets.
Please call Wilwood with any questions: (805) 388-1188

Wheel Clearance Assembly Instructions





Assembly Instructions
Notes
1. For OE rears with dual piston calipers.




Compatible Vehicles for this Brake Kit

BRAKE KIT:   AERO4 Big Brake Truck Rear Brake Kit

This Brake Kit is Compatible with the Following Vehicle Makes:   Chevrolet GMC

Note: Kit may fit other vehicles, call Wilwood Sales⁄Tech Support at (805) 388-1188 for more information.

REAR END:   OEM - Rear Kit

AXLE OFFSET:   0

For a Complete Listing including ALL Makes, Models and Years, Please click on the Axle Offset.


Kit Components & Specifications
Calipers
Left Hand - Part No: 120-13286-BK
Right Hand - Part No: 120-13285-BK
Type: AERO4
Finish Color: Black Powder Coat
Piston Count: 4
Piston Area (In²): 4.84
Piston Type: Stainless
Mount Type: Radial
Brake Pad Plate: 6617
Brake Pad Area (In²): 11.1
Brake Pad Volume (In³): 5.2
Pad Compound: BP-20
Rotors
Left Hand - Part No: 160-9788-GTB
Right Hand - Part No: 160-9787-GTB
Type: GT 72 Curved Vane
Style: GT Slotted
Surface Finish: Black Electro Coat
Material: Spec-37 Iron
Outside Diameter (in): 14.25
Width (in): 1.25
Vane Count: 72 CV
Design Type: GT-BLK
Bedded: No
Dynamically Balanced: Yes
Rotor Hats
Hat - Part No: 170-9890
Type: Parking Brake Hat - Truck
Material: Iron
Finish Color: Black E-Coat
Hat Offset Dimension (in): 2.34
Bolt Circle 1: 6 x 5.50
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1: 0.63
Stud Diameter - BC 2: 0
Stud Diameter - BC 3: 0
Hubs
Hub - Part No:
Type:
Material:
Finish Color:
Mount Style:
Bolt Circle 1:
Bolt Circle 2:
Bolt Circle 3:
Stud Diameter - BC 1:
Stud Diameter - BC 2:
Stud Diameter - BC 3:

Parts & Accessories
Caliper Parts
O-ring Kit: 130-5100
Replacement Dustboot: N-A
Replacement Piston 1: 200-7521
Replacement Piston 2: 200-7519
Replacement Piston 3: N-A
Replacement Piston 4: N-A
CrossOver O-Ring Kit: N-A
Crossover Tube: N-A
Self-Bleeder Tube: N-A
Bridge Bolt Kit: N-A
Wear Plate - Left Hand: 300-5876
Wear Plate - Right Hand: 300-5876
Pad Retainer: N-A
Bleed Screw Kit: 220-0627
Brake Lines
Front Line Kit:
Front Line Kit:
220-9886
220-11196
Hat
Bolt Kit: 230-8217
Hub
Bolt Kit:




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