Sorry, forgot to get back to you about this yesterday. Regarding the pipe extender, this was only made for (and included in) the 2057 pipe set, not the 2013. These are not sold as stand alone's and honestly I'm not sure why you would want to run one on the 2013, that pipe makes PLENTY of bottom end already lol! In this case I'm going to have to say you don't need it, even if you could find one save your money.