Wilwood 140-15940-DR Forged Narrow Superlite 6R Big-Brake Front Kit 12.19" (Red)

Vehicle Fitment

• 1963-1987 Chevrolet C10 / GMC C15 trucks (with Wilwood drop-spindles)

Features

• Forged Narrow Superlite 6R six-piston calipers (radial-mount)
• Red powder-coat finish for durability and style
• 12.19" SRP drilled & slotted rotors for better heat dissipation
• Cast-iron rotor construction for strong thermal capacity
• 32-vane rotor design for airflow and fade resistance
• Hat-mount aluminum hubs with dual lug patterns (5x4.75" & 5x5.00")
• Radial-mount brackets for improved stiffness and pedal feel
• Includes all necessary hardware (bolts, shims, washers)

Specifications

• Part number: 140-15940-DR
• Caliper type: Forged Narrow Superlite 6R, 6 pistons
• Piston bores: 1.75" + 1.25" + 1.25"
• Total piston area: ~4.86 in²
• Pad compound: BP-10
• Rotor diameter: 12.19"
• Rotor thickness: 1.10"
• Vane count: 32 (straight)
• Hub bolt patterns: 5 x 4.75" and 5 x 5.00"
• OE hub offset: +0.41"
• Minimum recommended wheel diameter: 15"
• Mount type: Radial mount

Included Components

• 2x Forged Narrow Superlite 6R calipers (left & right, red)
• 2x 12.19" SRP drilled & slotted rotors
• 2x Aluminum hub hats
• Radial-mount backing brackets
• Complete hardware kit

Product Description

The Wilwood 140-15940-DR is a high-performance front big-brake kit tailored for classic C10 and C15 trucks (1963-1987) using Wilwood's one-piece iron drop spindles. Its forged six-piston Narrow Superlite 6R calipers, finished in red powder-coat, deliver aggressive clamping power while the drilled and slotted 12.19" rotors provide excellent heat dissipation.

Designed to reduce unsprung weight and improve brake feel, the kit uses aluminum hat-mounted hubs with dual 5-lug bolt circles (4.75" and 5.00") for flexible wheel compatibility. The 32 straight-vane rotors help maintain cooling efficiency under repeated or high-load braking, while the included hardware ensures a full, clean installation.

This setup is ideal for builders upgrading their vintage Chevy truck's brake performance without sacrificing authenticity. Whether you're building a street cruiser or a show truck, the 140-15940-DR provides a powerful and stylish braking solution.