From HB Racing:
This C-Mount from HB Racing is wider and allows racers to run less than 2 degrees of toe-in. It can be used with D-Mounts with less than 3 degrees of toe-in to ensure proper fitment of the drive shafts. Our Team Drivers report that it helps rotation and corner speed. They’re machined from aluminum and anodized black.
Compatible with: D819, D817, D817T, E819, E817, D815, D812.