Wilwood 140-13874-R TX6R Tactical Extreme Rear Big Brake Kit 15.50in Red Calipers

The Wilwood Tactical Extreme TX6R Rear Big Brake Kit delivers professional-grade stopping performance engineered for heavy-duty trucks, SUVs, and armored vehicles. Built around Wilwood's forged aluminum TX6R six-piston radial-mount calipers in a bold red powder coat finish, this rear disc brake kit provides uncompromising fade resistance and consistent stopping power under sustained high-heat and severe-duty conditions.

At the heart of this kit is a massive 15.50-inch GT-60 directional vane Spec-37 alloy rotor — a cast iron alloy originally developed for military applications — paired with BP-Q compound brake pads for exceptional thermal durability. The TX6R calipers are volume-matched to retain full compatibility with the factory power brake system and OEM ABS, requiring no master cylinder upgrades.

Key Features:

• TX6R Six-Piston Radial-Mount Calipers — Forged aluminum construction with red powder coat finish for lightweight strength and corrosion resistance
• 15.50" GT-60 Spec-37 Alloy Rotor — Directional curved vane design maximizes airflow and heat dissipation for extreme-duty performance
• OEM Power Brake Compatibility — Calipers are volume-matched to work with the factory master cylinder and ABS system
• OE Parking Brake Integration — Retains and utilizes the factory parking brake assembly; no separate e-brake conversion required
• Requires 20" or Larger Wheels — Minimum wheel diameter needed for caliper clearance
• Ready-to-Install Kit — Includes radial-mount caliper brackets and all necessary installation hardware
• Replaces Factory Rear Disc Brakes — Direct bolt-on upgrade designed to complement front TX6R big brake upgrades

Note: Braided stainless steel flex lines may be required for some applications and are sold separately. This kit is identified by part number 140-13874-R, where the -R suffix denotes Red caliper finish. The standard black version is sold under part number 140-13874.