The disc is made from cast iron, constructed in the USA and is made to the same specification and material as used by professional racing organizations. It is a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.
*** Price is for a PAIR of rings and 2 hardware kits. ***
When comparison shopping, be sure to notice the quality of our components. Any questions, give us a call, we're happy to help!