Wilwood 140-17877-D Forged XRD Lug-Drive Drag Rear Disc Brake Kit Olds/Pontiac Offset - 2.81

The Wilwood 140-17877-D Forged XRD Lug-Drive Dynamic Stainless Super Alloy Rotor Brake Kit is purpose-built for drag race applications that place heavy demands on rear braking — including high-speed, heavyweight cars that generate above-average rear brake heat. This kit is designed for Oldsmobile and Pontiac axle applications with a 2.81" axle offset and a .50" rotor offset.

XRD Lug-Drive Rotor Mounting System:

• Bolt-free rotor attachment — a large single internal snap-ring retains the rotor in the hat, making assembly and disassembly fast and straightforward
• Rotors move independently of the hats during heat cycles, allowing free thermal expansion and contraction
• Eliminates all thermally generated stress at 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 during brake torque application
• Hat is no longer distorted by stresses from thermal expansion and shrinkage

Rotor Options:

• 11.44" diameter — traditional sizing for standard drag race wheel clearance
• 11.25" diameter — smaller profile designed for clearance with bead lock rims

Key Features:

• Forged aluminum XRD calipers with Type III hard anodized finish inside and out, including piston chambers
• High-temperature seals rated for sustained drag race heat cycles
• Dynamic Stainless Super Alloy (SA) rotors — scalloped and drilled for lightweight performance
• Available in Single and Dual caliper configurations to suit different vehicle weight and braking requirements
• Designed for Oldsmobile/Pontiac rear axle ends with a 2.81" axle offset

The Wilwood XRD Drag Rear Brake Kit delivers a high-performance, thermally optimized braking solution for serious drag race builds, combining advanced rotor retention engineering with proven Wilwood caliper technology.