Wilwood 120-16730-RD Tactical Xtreme Radial Mount Disc Brake Caliper - TX4R 4-Piston

The Wilwood Tactical Xtreme TX4R (Part No. 120-16730-RD) is a heavy-duty radial mount four-piston disc brake caliper engineered for severe duty service. Designed specifically for 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 extreme stopping power and durability demanded by the most demanding applications.

Key Features:

• Radial mount design — versatile and easily adapted for 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 consistent performance under extreme heat
• Compatible with rotors from 14.25" to 16.00" diameter and rotor widths from 1.38" to 1.50"
• Top-loaded brake pads — easy access Type 10120 pads, 0.770" thick with rigid 0.240" thick backing plates
• Stainless steel bridge plates for added structural rigidity
• Protected single bleed design with internal fluid ports to minimize contamination risk
• Finished in red powdercoat for corrosion resistance and professional appearance

The TX4R caliper is purpose-built for severe-duty and tactical vehicle applications where reliability and braking performance cannot be compromised. Its radial mount architecture ensures precise rotor alignment and consistent pad contact across the full range of supported rotor sizes.