
Original: $3,480.63
-65%$3,480.63
$1,218.22The Story
AERO4 / MC4 Rear Brake Upgrade Kit
14" Discs With Parking Brake, Lines & Cables
for Ford Mustang 2015-23
Manufactured by Wilwood | Part #140-13888
The AERO4-MC4 Big Brake Rear Axle Kit replaces the factory disc brakes and uses the MC4 parking brake assembly as a compliment to front big brake upgrades on late model high performance vehicles.
High capacity braking from the AERO4R calipers, BP-10 compound pads, and oversized 14.00" 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, tyre, and suspension upgrades on customised vehicles and all others with increased brake requirements.
Available in the following configurations:
- Red Calipers 14-inch Drilled & Slotted Discs - 140-13888-DR
- Red Calipers 14-inch Slotted Discs - 140-13888-R
- Black Calipers 14-inch Drilled & Slotted Discs - 140-13888-D
- Black Calipers 14-inch Slotted Discs - 140-13888
Features:
- High capacity braking
- Replaces the factory disc brakes
- AERO4R black calipers
- Rust resistant
- Quality brake pads
- Oversized 14” rotors
- Matches OE master cylinder output /ABS function
- Increased durability
- Compliments big wheels
- Made in the USA
- Easy installation
Vehicle Applications:
- Ford Mustang S550 - 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
AERO4 / MC4 Rear Brake Upgrade Kit
14" Discs With Parking Brake, Lines & Cables
for Ford Mustang 2015-23
Manufactured by Wilwood | Part #140-13888
The AERO4-MC4 Big Brake Rear Axle Kit replaces the factory disc brakes and uses the MC4 parking brake assembly as a compliment to front big brake upgrades on late model high performance vehicles.
High capacity braking from the AERO4R calipers, BP-10 compound pads, and oversized 14.00" 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, tyre, and suspension upgrades on customised vehicles and all others with increased brake requirements.
Available in the following configurations:
- Red Calipers 14-inch Drilled & Slotted Discs - 140-13888-DR
- Red Calipers 14-inch Slotted Discs - 140-13888-R
- Black Calipers 14-inch Drilled & Slotted Discs - 140-13888-D
- Black Calipers 14-inch Slotted Discs - 140-13888
Features:
- High capacity braking
- Replaces the factory disc brakes
- AERO4R black calipers
- Rust resistant
- Quality brake pads
- Oversized 14” rotors
- Matches OE master cylinder output /ABS function
- Increased durability
- Compliments big wheels
- Made in the USA
- Easy installation
Vehicle Applications:
- Ford Mustang S550 - 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023











