Wilwood 120-16891-RD Forged Radial Mount Disc Brake Caliper - Aero6 6-Piston Red

The Wilwood Aero6 120-16891-RD is a forged six-piston radial mount disc brake caliper finished in red anodize, engineered to deliver heavy-duty stopping power for both street and track applications. Built on race-proven technology, the Aero6 incorporates a body design with widespread adaptability, making it a go-to solution for high-performance and heavyweight braking builds.

Key Features:

• Radial mounting for precise, rigid caliper positioning and improved brake feel
• Six-piston forged aluminum body with multiple piston volume options to suit varying pad and rotor combinations
• Compatible rotor diameter range: 12.88" to 15.00" for maximum setup flexibility
• Stress-flow forged aluminum alloy construction — realigns the metal's internal grain structure to follow the caliper body contour, eliminating stress points and grain interruptions found in straight billet machining
• Internal fluid ports eliminate external fluid crossover tubes and the bulky center bridge assembly for a cleaner, more reliable design
• Thermlock piston technology insulates pistons from rotor heat, protecting brake fluid and seals under sustained high-heat braking
• Type III hard anodize coating for superior corrosion and wear resistance
• Red anodized finish for a high-visibility, performance-oriented appearance

The Aero6's stress-flow forged body delivers superior clamping efficiency and outstanding resistance to fatigue, distortion, and stress under heavy braking loads — characteristics that make this caliper equally at home on a road course as on a performance street build. The Aero6 represents the latest evolution of Wilwood's W6A caliper series, combining proven platform architecture with modern internal porting and sealing refinements.