Description
The Wilwood AERO4 Big Brake Rear Brake Kit (manufacturer part number 140-10948; Summit Racing part number WIL-140-10948) is a rear disc brake upgrade for muscle car rear axles that require a parking brake. Its four-piston forged billet aluminum calipers and two-piece rear rotors are designed to complement front big brake upgrades on custom, show, and high-performance street vehicles.
The kit includes 14.00 in. (355.60mm) vented rear rotors with slotted surfaces, 1.10 in. thickness, and BP-10 brake pads. An internal-drum parking brake provision is built into the system, with the shoe mechanism concealed for a clean installation and static holding power.
- Position: Rear; rear calipers, rotors, and pads included
- Calipers: Four-piston forged billet aluminum, black finish
- Rotor bolt patterns: 5 x 4.50 in./114.30mm, 5 x 4.75 in./120.65mm, and 5 x 5.00 in./127.00mm
- Axle housing flange style: Big Ford New Style/Torino, 3.562 in. x 2.00 in.
- Minimum recommended wheel diameter: 18 in.; offset: 2.500 in.
Confirm your axle flange, wheel bolt pattern, and wheel clearance before ordering; select the kit for your axle and bolt-pattern requirements. This is a rear kit: front rotors, front calipers, and front spindles are not included. A master cylinder, brake booster, and brake hoses are also not included. Sold as a kit; not remanufactured.










