Wilwood 140-15303 Forged Narrow Superlite Disc Brake Kit for GM Trucks - 6R 1963-1987 C10/C15

The Wilwood 140-15303 is a high-performance disc brake kit engineered specifically for 1963-1987 Chevrolet and GM C10/C15 trucks equipped with Wilwood's Modular Drop Pro Spindles. This kit features the Forged Narrow Superlite 6R (FNSL6R) six-piston caliper, delivering exceptional braking capacity for trucks with upgraded wheels, tires, and suspension systems.

Key Features:

• Forged Narrow Superlite 6R six-piston caliper design for maximum clamping force
• 13"-14" big rotor compatibility for increased thermal capacity and fade resistance
• Application-specific engineering ensures simplified installation
• Full compatibility with OE master cylinder output and factory ABS systems
• Requires Wilwood Modular Drop Pro Spindles (sold separately)
• Multiple caliper finish options available for custom styling
• Choice of rotor designs to match performance requirements

This big brake kit is ideal for show trucks, high-performance street applications, and track use where increased stopping power and heat dissipation are essential. The FNSL6R caliper's forged construction provides exceptional strength while maintaining a compact footprint for wheel clearance. Whether you're building a show-quality C10 or a performance-oriented truck, this kit delivers the braking performance and visual appeal to complement modern wheel and tire packages.