Rotor 11.75in Dia x .810in Right Spec 37

The Wilwood Rotor 11.75in Dia x .810in Right Spec 37 (MPN 160-16869) is a high-performance brake rotor engineered for serious enthusiasts who demand repeatable stopping power under extreme conditions. Whether you're upgrading a street car, track vehicle, or competition build, this directional rotor delivers the thermal capacity and precision engineering required for demanding driving. The right-hand directional design optimizes brake pad bite and heat dissipation, making it an essential component for any high-performance braking system upgrade.

Manufactured from premium cast iron, the Rotor 11.75in Dia x .810in Right Spec 37 measures 11.75 inches in outer diameter with a robust 0.810-inch thickness—a critical dimension that resists fade and maintains consistent braking response cycle after cycle. The directional vane design channels heat away from the friction surface more efficiently than plain rotors, while the 8 x 7.000-inch bolt pattern ensures compatibility with Wilwood's extensive brake caliper lineup and most standard vehicle hubs. At 8.56 lbs per rotor, the weight is optimized to balance thermal mass with minimal unsprung load, improving both braking response and ride quality on performance applications. The natural iron finish resists corrosion while revealing the precision machining that makes Wilwood rotors the choice of professional fabricators.

This rotor is ideal for vehicles running Wilwood brake systems or custom brake conversions requiring a passenger-side application with the 8 x 7.000-inch bolt pattern. Installation requires careful attention to rotor orientation—the directional vane pattern must face the proper direction to achieve maximum cooling effectiveness. Mechanics and fabricators appreciate the precision fit and Wilwood's reputation for quality control; rotors should always be purchased in matched pairs to ensure balanced braking and prevent pulling. For street, strip, or track duty, pairing the Rotor 11.75in Dia x .810in Right Spec 37 with quality brake fluid and appropriate Wilwood pads creates a stopping system that responds predictably lap after lap.