Quote Originally Posted by Flyinglizard View Post
All that I know is that these guys went crazy when I advertised race axles with improved/new parts. Like 4130 cv cages. and custom fit balls.
I thought there was something else with your axles? Shortened? Larger diameter or cages? Sorry, the memory is failing. It was more than just hardened bearings.

As I'm finding, this has been a topic of conversation for the Miata front hubs. Mazda Speed offers a "HD" (heavy duty) hub. Hardened bearings, more round (really!) and better grease. Are they legal for SM?

Someone also does a different materials bearing (Teflon??). Almost impossible to inspect so is it legal because it's "tech shed" legal?