Wilwood 140-17878-D XRD Lug-Drive Rear Disc Brake Kit Olds/Pontiac 2.81 Offset

The Wilwood XRD Lug-Drive Dynamic Rear Disc Brake Kit delivers advanced thermal management and simplified installation for high-performance applications. Engineered specifically for Oldsmobile and Pontiac rear axles with 2.81-inch offset and 0.50-inch spacing, this kit excels in demanding conditions where rear brake heat generation is critical.

Key Features:

• Forged XRD Dynamic Stainless Super Alloy rotors with lug-drive mounting system eliminate traditional rotor bolts
• Single internal snap-ring retention system allows independent rotor movement during thermal expansion and contraction
• Eliminates thermally-generated stress at rotor attachment points for flatter, truer-running rotors
• Spring-loaded replaceable stainless steel inserts protect aluminum hat from wear during brake torque loading
• Available in 11.44-inch or 11.25-inch rotor diameters for bead lock rim clearance
• Prevents hat distortion caused by thermal expansion and shrinkage cycles
• Ideal for high-speed, heavy-weight vehicles and applications with heavy rear brake reliance

This innovative lug-drive design makes rotor assembly and installation significantly faster while improving thermal performance and component longevity. The system's ability to manage heat cycling stress ensures consistent braking performance and extends rotor life in the most demanding racing and performance applications.