Wilwood 140-17142-DR Big Brake Rear Axle Disc Brake Kit with Rotors - AERO4-MC4 14

The Wilwood 140-17142-DR AERO4-MC4 Big Brake Rear Axle Kit is a bolt-on factory disc brake replacement engineered for late-model high-performance vehicles. Designed to complement front big brake upgrades, this kit delivers substantially increased stopping power while maintaining full compatibility with OE master cylinder output, ABS systems, and individual vehicle brake bias requirements.

At the heart of the system are AERO4R four-piston calipers paired with BP-10 compound brake pads and oversized 14.00-inch rotors — a significant step up in thermal capacity and braking force over factory rear brake assemblies. The integrated MC4 parking brake assembly provides a fully functional electronic parking brake solution with no loss of OEM functionality.

Key Features:

• AERO4R four-piston rear calipers for high-capacity braking force
• 14.00" oversized slotted rotors for improved heat dissipation and fade resistance
• MC4 integrated parking brake assembly — fully replaces OEM parking brake function
• BP-10 brake pad compound optimized for high-performance street and track use
• Compatible with OE master cylinder, ABS, and factory brake bias calibration
• Direct bolt-on replacement for factory rear disc brake systems
• Ideal complement to front big brake upgrade kits on customized and high-performance vehicles
• Wilwood Red powder coat caliper finish for a high-tech, race-inspired appearance

The 140-17142-DR is well-suited for vehicles with upgraded wheels, tires, and suspension where factory rear brakes are no longer adequate. Whether used on a dedicated performance build or an aggressive street machine, this kit provides the stopping power, durability, and visual presence to match the rest of the build.