Wilwood 140-12549-D DPL Single Rear Dynamic Drag Brake Kit SA Drilled

The Wilwood 140-12549-D is a Billet Dynapro Lug-Drive (DPL) Single Caliper Rear Dynamic Brake Kit featuring Super Alloy (SA) drilled rotors, engineered for high-performance drag racing and street/strip applications. This kit is purpose-built for vehicles that place heavy demands on rear braking — including high-speed, heavyweight cars that generate above-average rear brake heat.

Lug-Drive Dynamic Rotor Mounting System:

At the heart of this kit is Wilwood's innovative lug-drive rotor mounting system. Rather than using conventional rotor bolts, a large single internal snap-ring retains the rotor in the billet aluminum hat, making assembly and disassembly fast and straightforward. This dynamic design allows the rotor to float and move independently of the hat as it expands and contracts through heat cycles, eliminating thermally generated stress at the rotor attachment points. The result: rotors that stay flatter, run truer, and last longer.

Key Features:

• Billet Dynapro Lug-Drive (DPL) single caliper configuration — forged billet construction for maximum strength and durability
• Dynamic rotor mounting — snap-ring retention allows independent rotor float during thermal expansion and contraction
• Super Alloy (SA) drilled rotor — available in 11.44" standard diameter or 11.25" diameter for clearance with bead lock rims
• Spring-loaded, replaceable stainless steel lug-drive inserts — protect the aluminum hat from wear caused by rotor loading during brake torque application
• Stress-free hat design — hats remain undistorted because thermal expansion forces are no longer transferred through rigid rotor bolts
• 2.81" offset — optimized for Lamb/Moser-width rear axle applications
• Complete kit with hardware for straightforward installation

The Wilwood DPL Dynamic Rear Brake Kit is also available in a dual caliper configuration for applications requiring maximum rear braking force. Whether you're building a dedicated drag car or a high-performance street/strip machine, this kit delivers consistent, reliable stopping power under the most demanding thermal conditions.