Fox upgrade VS Shock Therapy by RR | Aug 28, 2017 | Suspension | 0 comments Has anyone compared the Fox upgrade VS the Shock Therapy? I ride hard and sandy trails. Northern MI…. I’d like to do one of these kits but want the best for my money. Sent from my iPad using Tapatalk Utah RZR Rentalswhence Submit a Comment Cancel replyYou must be logged in to post a comment.