Wilwood AERO4 Front 14.25" Big Brake Kit w/ Drilled & Slotted Rotors & 4 Piston Black Calipers 2014-2018 Silverado & GMC Sierra 1500

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Our Price: $2,286.24
Frequently bought together:


  • Enhance Brake Performance and Increase Durability
  • Fully Compatible with OE Master Cylinder Output and ABS Function
  • Uses Factory Parking Brake Assembly
  • Maximum Cooling for High Heat Durability
  • Directional Drilled and Slotted 14.25"" Rotors
  • 4 Piston Black Power Coated W4AR Calipers
  • Stainless Steel and Iron Construction
  • 0.00 Axle Offset



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. 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. *Brake lines will need to be purchased.






Type: AERO4
Finish Color: Black Powder Coat
Piston Count: 4
Piston 1 Bore: 1.62""
Piston 2 Bore: 1.38""
Piston Area: 3.56""
Piston Type: Stainless
Mount Type: Radial
Brake Pad Area: 11.1""
Brake Pad Volume: 5.2""
Pad Compound: BP-20


Type: SRP Drilled Rotor
Style: SRP Drilled & Slotted
Surface Finish: Black Electro Coat
Material: Spec-37 Iron
Outside Diameter: 14.25""
Width: 1.25""
Vane Count: 72 CV
Design Type: GT
Bedded: No
Dynamically Balanced: Yes

Rotor Hats:

Type: Parking Brake Hat - Truck
Material: Iron
Finish Color: Black E-Coat
Hat Offset Dimension: 2.260""
Bolt Circle 1: 6 x 5.50
Stud Diameter BC-1: 0.630""



Notes: Brake lines will need to be purchased (choose an option). Click here to view more information about the Wildwood Flexlines.


Note: THIS BRAKE KIT HAS A HUB OFFSET. This Hub Offset will move the wheels inward or outward from the fender by this amount on each side of the vehicle


Note: The minimum wheel requirement is 18"". Please check the wheel clearance diagram for details.

Part Number: 140-9407-D

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