Wilwood 140-14263-D Aero4 MC4 Big Brake Rear Kit 14.00" Drilled Rotors

The Wilwood AERO4-MC4 Big Brake Rear Axle Kit (140-14263-D) is a complete disc brake upgrade engineered for late model high-performance vehicles. Designed to replace factory rear disc brakes, this kit pairs the MC4 integrated parking brake assembly with oversized stopping power, making it an ideal complement to front big brake upgrades on street machines, custom builds, and performance-tuned vehicles.

At the heart of this kit are AERO4R 4-piston calipers delivering high-capacity clamping force, paired with BP-10 compound brake pads for strong, consistent friction. The oversized 14.00" drilled iron rotors provide excellent heat dissipation and a high-tech appearance, while the drilled pattern aids in cooling and helps clear brake dust and gases under heavy use.

Key Features:

• AERO4R 4-piston calipers for high-capacity rear braking performance
• MC4 parking brake assembly integrates with the OE parking brake cable
• 14.00" drilled iron rotors for enhanced cooling and fade resistance
• BP-10 compound brake pads for aggressive street and performance applications
• Engineered to match OE master cylinder output and maintain factory ABS function
• Calibrated to meet individual vehicle front-to-rear brake bias requirements
• Complements big wheel, tire, and suspension upgrades on customized vehicles
• Bolt-on installation designed around the factory rear axle architecture

The Wilwood 140-14263-D is purpose-built for enthusiasts who demand more from their rear brake system. Whether paired with a Wilwood front big brake kit or upgrading a custom high-performance build, this kit delivers enhanced stopping power, increased thermal durability, and race-inspired aesthetics.