Because race cars differ in their braking requirements, Wilwood has developed both specific designs and specialized materials and manufacturing techniques to accommodate different performance criteria. Wilwood vented rotors are designed for maximum cooling. The internal vanes pump cool air from the center of the wheel and take heat away from the rotor, allowing rotor temperatures to decrease. Specially formulated iron is used to enhance the stability of the rotor, while allowing difficult castings in complex vane configurations to be produced. Wilwood's proprietary casting techniques are the result of over 20 years of vented rotor research and development combined with actual on-track performance evaluation.
All rotors are precision machined to assure surfaces are flat and parallel.
Under such conditions specialty steels are used, often cross drilled to reduce rotational weight. Wilwood also manufactures dynamic mount rotors for Super Speedway applications as well as special limited duty street rod and pro series solid rotors. For all rotor designs, Wilwood conducts extensive in-house dynamometer testing to measure results of rotors under the most demanding conditions, This unique testing, teamed with extensive research and development and track testing assure the racer of the best quality high performance rotors available. Designed for braking applications that do not demand continuous thermal cycling or great cooling requirements, these rotors are used in Dirt Track, Lightweight Formula and Open Wheel Racing, as well as drag racing and super speedway applications because they will not fail under sudden thermal shock conditions. The lightweight designs greatly reduce rotating, unsprung weight which is further minimized with cross drilling.