Wilwood 120-16731 Tactical Xtreme Radial Mount Disc Brake Caliper - TX4R 4-Piston

The Wilwood Tactical Xtreme TX4R (Part No. 120-16731) is a heavy-duty radial mount four-piston disc brake caliper engineered for severe-duty service. Purpose-built for demanding applications including heavy-duty trucks, SUVs, and Class 1, 2, and 3 armored vehicles with a GVWR of up to 14,000 lbs., this caliper delivers the stopping power and durability required in the most extreme operating environments.

Key Features:

• Radial mount design — versatile and easily adapted to a wide range of vehicle platforms
• Stress-flow forged aluminum body — lightweight yet exceptionally strong 4-piston construction
• Stainless steel pistons with high-temperature internal bore seals for reliable performance under extreme heat
• Rotor compatibility: designed for rotors from 14.25" to 16.00" diameter and rotor widths from 1.38" to 1.50"
• Top-loaded brake pads (Type 10120) — easy access design with .770" thick pads and rigid .240" thick backing plates
• Stainless steel bridge plates for added structural integrity and corrosion resistance
• Protected single bleed design with internal fluid ports to guard against contamination and damage

The TX4R caliper is built to Wilwood's exacting standards for performance braking, making it an ideal solution for fleet operators, military vehicle builders, and upfitters requiring proven, certified braking hardware in mission-critical applications.