Polaris has been putting Fox shocks on different quads for a while... The shocks that come on the 450's are just a basic shock that really isn't any better then any stock shock on the Yamaha or Hondas. They are just like any other stock shock, it you want really good performance out of them you will have to send them to get resprung and reworked for your riding style. As far as the motor goes, it is a KTM motor just without the power. I think Polaris uses a different head and intake that makes it produce less power then the REAL KTM 450. Also parts and doing work on a KTM is a pain in the ASS.