Honestly, if your happy with the way its handling, there is no imediate need to change them. Once they wear out however, that would be a good time to get your aftermarket arms. You will need to setup your shocks to accomadate the +2 arms though. The advantage of +2 arms is stabality, adjustability and maybe weight savings, if that matters to you or not. I don't think you gain much travel if any when you switch to +2 arms, unless they are long travel.