Wilwood 140-9838-DR Rear Disc Brake Kit Drilled Rotor Red Caliper - W4A 14.25

The Wilwood W4A AERO4 Big Brake rear axle kit is a high-performance brake upgrade designed to replace factory disc brakes on late model trucks and SUVs. This complete rear brake system integrates seamlessly with your OE parking brake assembly and complements front big brake upgrades for balanced stopping power.

Key Features:

• AERO4 four-piston calipers in red finish for enhanced clamping force and heat dissipation
• 14.25-inch drilled rotors for improved cooling and wet weather performance
• BP-10 compound brake pads engineered for high-temperature stability and consistent bite
• Engineered to match OE master cylinder output and maintain ABS function
• Optimized brake bias for proper front-to-rear balance
• Retains factory parking brake assembly for complete functionality
• Increased thermal capacity and fade resistance for demanding applications

This kit is ideal for customized trucks and SUVs with oversized wheels and tires, heavy-duty tow rigs, and vehicles with elevated gross vehicle weight ratings that demand superior braking performance. The combination of larger rotors, high-performance calipers, and upgraded pad compounds delivers enhanced stopping power, improved modulation, and extended service life under severe conditions.