Wilwood 140-12556-D DPL Dual Rear Dynamic Disc Brake Kit SA Drilled Rotors

The Wilwood 140-12556-D is a Billet Dynapro Lug-Drive (DPL) Dual Caliper Rear Dynamic Drag Brake Kit featuring Stainless Super Alloy (SA) drilled rotors. Engineered for high-performance and drag racing applications, this kit is purpose-built for vehicles that place heavy demands on rear braking — including high-speed, heavyweight builds that generate above-average rear brake heat.

At the core of this system is Wilwood's innovative lug-drive rotor mounting system, which replaces traditional rotor bolts with a large single internal snap-ring to retain the rotor in the hat. This design allows the rotor to move independently of the hat through heat cycles, eliminating thermally generated stress at the rotor attachment points. The result: rotors that stay flatter, run truer, and hats that resist distortion caused by thermal expansion and contraction.

Key Features:

• Dual Dynapro caliper configuration for maximum rear clamping force and braking authority
• Lug-drive rotor mounting — no rotor bolts; single internal snap-ring for fast, simple assembly
• Stainless Super Alloy (SA) drilled rotors reduce unsprung weight and improve heat dissipation
• Two rotor diameter options: traditional 11.44" diameter or compact 11.25" for bead lock rim clearance
• Spring-loaded, replaceable stainless steel inserts in each lug-drive slot protect the billet aluminum hat from rotor-induced wear under brake torque
• Rotor expands and contracts independently of the hat, keeping stress off attachment points
• Billet aluminum hat construction for lightweight strength and thermal stability

The Wilwood 140-12556-D DPL Dynamic Rear Brake Kit is an ideal upgrade for performance builds requiring serious rear stopping power with heat management built in from the ground up.