Wilwood 140-12547-D DPL Single Rear Dynamic Drag Brake Kit SA Drilled - 11.44in

The Wilwood 140-12547-D Billet Dynapro Lug-Drive (DPL) Single Rear Dynamic Brake Kit is an engineered solution for high-performance drag racing and street/strip applications that place heavy demands on the rear braking system. Designed specifically for vehicles that rely heavily on rear brakes for stopping power, this kit excels in high-speed, heavy-duty environments where above-average rear brake heat is a concern.

Lug-Drive Rotor Mounting System:

The defining innovation of this kit is Wilwood's lug-drive rotor mounting system, which completely eliminates traditional rotor mounting bolts. Instead, a single large internal snap-ring securely retains the rotor within the hat, making assembly and disassembly straightforward and fast. This floating design allows the rotor to move independently of the hat as it expands and contracts through repeated heat cycles, eliminating thermally induced stress at the rotor attachment points. The result is rotors that stay flatter and run truer over the life of the kit.

Billet Aluminum Hat Protection:

The aluminum hat is shielded from rotor-induced wear by spring-loaded, replaceable stainless steel inserts located in each lug-drive slot. These inserts absorb the loading forces of the stainless steel rotor against the hat when brake torque is applied, preventing hat distortion and extending the serviceable life of the assembly.

Key Features:

• Rotor Type: Stainless Super Alloy (SA), drilled
• Rotor Diameter: 11.44 inches (traditional diameter; 11.25 in. version available for bead lock rim clearance)
• Rotor Width: 0.35 inches
• Caliper Configuration: Single caliper, 4-piston Billet Dynapro
• Axle Offset: 2.36 inches (Big Ford rear end)
• Mounting Style: Lug-drive with single internal snap-ring retention
• Hat Material: Billet aluminum with replaceable stainless steel lug-drive inserts
• Available Configurations: Single and dual caliper versions offered

The Wilwood DPL Dynamic Kit 140-12547-D is built for serious performance applications where brake system reliability and heat management are critical. The drilled SA rotor surface promotes heat dissipation and helps clear gases and debris under hard braking conditions, making this kit a top choice for drag racing, hot rods, and high-performance custom builds.