![Wilwood AERO4 Rear Big Brake Kit with 14.25-Inch Drilled and Slotted Rotors; Red Calipers (99-06 Sierra 1500)](https://www.americantrucks.com/image/wilwood-sierra1500-aero4-rear-big-brake-kit-1425-inch-rotors-red-calipers-140-9838-dr.S124691.jpg?obj=car&wid=640&hei=480&sharpen=1)
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Description, Q&A
Description. 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:
Wilwood 140-9838-DR
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