Alright lo i was about to say im outting all this money in it it better do something. an im runing either 18 inch or 20 inch mudsharks i think there actually 18 im not sure i plan on buying a new set so i didnt pay much attention to em there kida just on there for now an yeah i like my trail riding more ill use the 13/40 tooth. Im also looking for an exahust theres a kinda beat up fmf gold series for 100 buck no silencer online