I switched from stock springs in my forks, over to Progressive springs. About 10,000 miles later the crap anti-dive blew my left fork seal. Found the Progressive spring was broken when I was repairing the seal. I was rather bummed that it broke and called Progressive. They said to ship them back both springs and they would replace them, no receipt required and no questions asked. That was cool of them, but I never really expected a failure with one of their springs. It's not the first I've heard of this happening with a Progressive.

I am in the process of installing the Traxxion suspension now.