Wilwood 140-12554-D DPL Dual Rear Dynamic Disc Brake Kit SA Drilled Rotors

The Wilwood 140-12554-D is a Billet Dynapro Lug-Drive (DPL) Dual Caliper Rear Dynamic Disc Brake Kit featuring Super Alloy drilled rotors. Engineered specifically for drag racing and high-performance applications, this kit is ideal for vehicles that place heavy demand on the rear brakes — including high-speed, heavyweight cars that generate above-average rear brake heat.

Lug-Drive Dynamic Rotor Mounting System:

• Eliminates traditional rotor bolts — a single large internal snap-ring retains the rotor within the hat for fast, straightforward assembly
• Rotors float independently of the hat, allowing free thermal expansion and contraction through heat cycles
• All thermally generated stress is removed from the rotor attachment points, keeping rotors flatter and running truer
• Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the aluminum hat from wear caused by rotor loading under brake torque

Caliper & Rotor Specifications:

• Dual caliper configuration using Dynapro forged billet, lug-mount four-piston calipers
• Rotor diameter: 11.44 inches (290.5 mm)
• Rotor thickness: 0.35 inches
• Rotor surface: Cross-drilled (SA — Super Alloy)
• Rotor construction: Solid
• Offset: 2.81 inches
• Minimum recommended wheel diameter: 15 inches

Kit Highlights:

• Forged billet hats and direct-mount stainless steel rotors reduce weight significantly compared to OEM brake components
• Dynamic rotor mounting reduces distortion from high temperatures and extends rotor service life
• Kit is sold as a complete rear axle assembly
• Does not include master cylinder, brake booster, or brake lines
• No parking brake provision

The Wilwood 140-12554-D is part of the DPL Pro-Series drag brake lineup, purpose-built for competitive drag racing and serious high-performance street/strip builds demanding maximum rear braking efficiency and thermal durability.