When every acceleration demands equally powerful stopping force, when heavy loads push braking systems to their limits, drivers of trucks and SUVs require uncompromising performance. The Wilwood TX6R Rear Big Brake System represents the pinnacle of heavy-duty braking technology, delivering unprecedented safety and control for trucks, SUVs, and specialized vehicles operating under extreme conditions.

Wilwood Engineering has established itself as an industry leader in high-performance braking solutions. The TX6R series for truck rear axles incorporates cutting-edge technology and rugged design principles to deliver exceptional stopping power. At its core, the system features massive TX6R six-piston radial-mount calipers paired with 15.50-inch GTB alloy rotors, engineered to withstand sustained high temperatures and extreme loads while maintaining consistent braking performance.

TX6R Six-Piston Calipers: The radial-mount design provides superior rigidity and ensures even pad-to-rotor contact. Six independently operating pistons (1.62-inch inner pistons and 1.38-inch outer pistons) create a total piston area of 5.06 square inches, delivering powerful, linear braking response. Constructed from durable cast iron with multiple finish options including matte black, anodized, and red, these calipers combine performance with customization. Stainless steel pistons and high-performance BP-Q brake pads (12.69 square inches of friction surface) ensure reliability under extreme conditions.

15.50-Inch GTB Ventilated Rotors: The massive rotor diameter increases braking leverage while the 1.38-inch thickness provides substantial thermal capacity. The one-piece high-strength cast iron rotors feature GT slot patterns that effectively evacuate brake dust and gases. Forty-eight internal cooling vanes and black electro-coating treatment enhance heat dissipation and corrosion resistance.

Precision Rotor Hats: These critical components ensure proper rotor alignment and secure mounting to the wheel hub, contributing to overall system stability.

The TX6R system is designed for straightforward installation with factory brake systems, including all necessary mounting hardware and aerospace-grade stainless steel braided brake lines for improved pedal feel. The kit requires 20-inch wheels minimum, with detailed clearance diagrams provided to verify fitment. Proper axle offset verification (0.00 OEM offset for part number 140-14559) is essential before installation.

• Significantly reduced stopping distances across all driving conditions
• Enhanced durability for heavy-duty applications
• Superior resistance to brake fade during sustained use
• Improved vehicle control and driver confidence
• Customizable appearance with multiple caliper finishes

The TX6R Rear Big Brake Kit (Part No: 140-14559) includes matched left/right calipers (120-14600-BK and 120-14599-BK), 15.50-inch GTB slotted rotors (160-14563-GTB), rotor hats, all mounting hardware, and stainless steel brake lines. Alternative configurations offer anodized (140-14559-C) or red (140-14559-R) caliper finishes.

Currently confirmed for Ford applications, Wilwood recommends direct consultation to verify compatibility with specific vehicle configurations. The system carries a manufacturer's suggested retail price of $3,441.45, with potential variations based on configuration and market conditions.

A California Proposition 65 warning applies regarding potential chemical exposure from brake components, recommending proper ventilation during installation and maintenance.