Wilwood 140-9407 Rear Truck Big Brake Kit Rotor - W4A 14.25

The Wilwood W4A Rear Truck Kit (part number 140-9407) is a high-performance disc brake upgrade system designed specifically for late model trucks and SUVs. This complete rear axle brake kit features 14.25-inch oversized rotors and replaces factory disc brakes while retaining compatibility with OE parking brake assemblies.

Key Features:

• AERO4 forged billet calipers deliver significantly increased stopping power and heat dissipation
• 14.25-inch diameter rotors provide enhanced thermal capacity and fade resistance
• BP-10 compound brake pads offer excellent bite and consistent performance under heavy use
• Engineered to work with OE master cylinder output and maintain proper ABS function
• Matched brake bias designed for individual vehicle requirements
• Retains factory parking brake assembly for complete functionality
• Ideal for vehicles with increased gross vehicle weight (GVW), towing applications, or large wheel and tire upgrades

This rear brake kit is the perfect complement to front big brake upgrades, providing balanced high-performance stopping power for customized trucks, heavy-duty tow rigs, and SUVs that demand enhanced braking capacity. The system combines increased durability with Wilwood's distinctive high-tech styling to match modern suspension and wheel packages.