Wilwood 140-15940-DR Forged Narrow Superlite 6R Rear Big Brake Kit for 1963-1987 GM Full-Size Trucks

Upgrade the rear braking performance of your 1963-1987 GM full-size truck with the Wilwood 140-15940-DR Forged Narrow Superlite 6R Big Brake Kit. Designed for applications using a C10 Pro spindle, this complete kit combines a high-performance six-piston aluminum caliper with a drilled and slotted iron rotor to deliver strong, consistent stopping power for street, performance, and custom truck builds. The red powder-coated caliper adds a clean, finished appearance while providing the durability expected from Wilwood performance braking components.
The Forged Narrow Superlite 6R caliper is engineered for reliable operation and efficient heat management under demanding braking conditions. Its lightweight aluminum construction helps reduce unsprung weight, while the six-piston design promotes even pad loading and responsive pedal control. The included 12.19-inch drilled and slotted iron rotor helps dissipate heat and supports dependable braking performance during repeated stops. This rear brake system is configured as a kit for GM full-size truck applications from 1963 through 1987.
Wilwood part number 140-15940-DR is intended for enthusiasts seeking a capable, visually distinctive brake upgrade without sacrificing fitment-focused design. Confirm wheel clearance, axle configuration, spindle compatibility, and other vehicle-specific requirements before installation. Professional installation is recommended to ensure proper assembly, brake system balance, and safe operation.

Features:

• Brand: Wilwood

• Part Number: 140-15940-DR

• Application: Rear brake kit for 1963-1987 GM full-size trucks

• Caliper: Forged Narrow Superlite 6R six-piston aluminum caliper

• Rotor: Drilled and slotted iron rotor

• Caliper Finish: Red powder coat

• Spindle Compatibility: C10 Pro spindle

• Kit Type: Complete big brake system kit