3 inch is the new 5 inch. SX3u is unstoppable. by Bill | Jan 8, 2018 | Featured, News | 1 comment Chad Miller AKA MADCHILLER AKA BQE TPU PHD, testing the new SX3u. Damn nimble 3″ on 4s. It’ll haul a session too…. check out the SX3u. Submit a Comment Cancel replyYou must be logged in to post a comment.