Ultralite Vented Rotor

The WILWOOD Ultralite Vented Rotor is engineered for serious enthusiasts and track-focused builds where unsprung weight reduction directly impacts handling dynamics and acceleration. This brake rotor delivers the thermal performance and fade resistance demanded by high-performance applications while shedding unnecessary mass that compromises suspension geometry and responsiveness. Whether you're building a road race car, autocross competitor, or street-legal performance machine, the Ultralite Vented Rotor's lightweight construction makes it an essential upgrade for those serious about weight optimization.

Cast from ductile iron and finished in natural (uncoated) state, this vented rotor design maximizes airflow through internal cooling channels, dissipating brake heat more efficiently than solid designs while maintaining structural rigidity. At 9.26 pounds per rotor, the Ultralite construction significantly reduces rotational mass compared to OEM equivalents—a critical factor when tuning suspension response and minimizing gyroscopic effects during aggressive cornering. The 12.188-inch outer diameter with 0.813-inch thickness and 8 x 7.620-inch bolt pattern provides robust thermal capacity across a wide performance envelope, while the vented architecture prevents glazing and promotes consistent friction coefficients during extended track sessions or repeated high-speed stops.

This rotor pairs ideally with upgraded brake pads and stainless steel braided lines to unlock the full potential of modern brake systems on road course and competition vehicles. Installation requires verification of your specific bolt pattern compatibility and caliper clearance—especially when running larger wheel packages or aftermarket suspension geometry. The natural iron finish demands regular maintenance to prevent surface corrosion in wet climates; many builders apply high-temperature coating or simply accept the patina as part of the performance aesthetic. Sold as a single rotor for customers building complete brake systems or replacing worn components on existing upgrade platforms.