Wilwood 140-14263 Aero4 MC4 Big Brake Rear Kit 14.00" Currie Pro-Tour Unit Bearing Floater

The Wilwood 140-14263 is an AERO4/MC4 Big Brake Rear Axle Kit engineered for the Currie Pro-Tour unit bearing floater rear end. Designed as a complete factory disc brake replacement, this kit pairs seamlessly with front big brake upgrades on late-model high-performance and custom street machines.

At the heart of the kit are forged AERO4R four-piston calipers delivering outstanding clamping force, paired with oversized 14.00" vented two-piece rotors and BP-10 high-performance compound brake pads. The system is engineered to work in harmony with the OE master cylinder output, factory ABS function, and individual vehicle brake bias requirements — no master cylinder upgrade required.

Integrated into the rotor hat is an MC4 internal drum-style parking brake assembly that provides a clean, concealed installation with strong static holding power, eliminating the need for external parking brake hardware.

Key Features:

• Forged AERO4R 4-piston rear calipers for high-capacity braking performance
• Oversized 14.00" vented two-piece rotor for superior heat dissipation
• BP-10 compound brake pads matched to OE master cylinder output and ABS
• MC4 internal drum-style parking brake — clean install, superior static hold
• Designed specifically for Currie Pro-Tour unit bearing floater rear ends
• Replaces factory rear disc brake assembly completely
• Compatible with OE ABS systems and individual vehicle brake bias tuning
• Optional caliper finishes and rotor styles available (slotted, drilled, e-coated)

This big brake rear kit is the ideal complement to big wheel, tire, and suspension upgrades on custom builds, pro-touring vehicles, and any application demanding elevated braking performance and durability.