After buying a great spring package from them for the RZR I had, I contacted them and asked for some products for our 500's and also asked them to check out this site for ideas for products...they were one of the few companies that made a lift for the RZR that didn't bind axles (2")...give them a comment on their facebook page...they seemed pretty interested (which is more than I can say about Fox or Walker Evans) Racer Tech