Wilwood 120-14318-FS TC6R Radial Mount 6-Piston Brake Caliper Red Left/Hand Front

The Wilwood TC6R Radial Mount Caliper (120-14318-FS) is a left-hand, front-position, six-piston disc brake caliper finished in Wilwood's signature multi-process gloss red coating. Engineered for custom late-model trucks and sport utility vehicles demanding serious big brake performance, the TC6R combines race-derived technology with street-ready durability in a bold, high-visibility package.

Forged Aluminum Construction:

The TC6R body is stress-flow forged from premium-grade billet aluminum alloy blanks. Finite Element Analysis (FEA) structural modeling was used to minimize weight while maximizing rigidity against deflection. The two-piece body halves are joined through the bridge with six high-strength coated steel alloy bolts, adding resistance against body separation and flex under heavy braking loads. Steel insert plates are integrated at the bridge to protect against wear and gouging from the load-bearing edges of the brake pads.

Six-Piston Stainless Steel Differential Bore Design:

Weighing in from just 8.66 lbs, the TC6R delivers exceptional pad clamping efficiency through six thick-walled stainless steel pistons with bore sizes of 1.75" and 1.38". The differential piston bore design is derived from Wilwood's racing caliper technology—clamping pressure is proportionately distributed across the pad face to deliver balanced loading and even wear at all temperatures and load levels. Piston bore volumes are matched for compatibility with OEM master cylinders and power brake booster systems, making this caliper a practical upgrade without requiring a complete hydraulic overhaul.

Key Features:

• Six thick-walled stainless steel pistons — 1.75" and 1.38" bore sizes
• Accommodates rotors up to 1.38" thick and up to 16" in diameter
• Stress-flow forged high-strength aluminum alloy body
• FEA-optimized design for maximum rigidity at minimum weight
• Six high-strength coated steel alloy cross-bridge bolts resist deflection and body separation
• Steel insert plates protect bridge surfaces from pad edge wear
• Stainless steel pistons resist corrosion and reduce heat transfer to caliper body, seals, and fluid
• Differential piston bore layout for proportional clamping force and even pad wear
• Piston bore volumes matched to OEM master cylinder and power booster output
• Rubber-dampened fluid transfer tubes for smooth hydraulic response
• Recessed two-piece bleed screws for easy bleeding access
• Bridge-mounted pad-dampening springs reduce vibration, road rattle, and brake squeal
• Multi-process gloss red finish for a custom, high-tech appearance
• Left-hand / front position — sold individually

The TC6R is designed for use with Wilwood radial mount adapter brackets, which provide a secure and precise method of attaching the caliper to factory spindle mount bosses. For complete big brake upgrade systems, Wilwood offers full kit configurations pairing this caliper with matching rotors, pads, brackets, and hardware.