on a trx450r 2007.whene u unscrew the 3 bolts on the end of the pipe(stock)is that the baffle and sparkarrestor?and if so will it hurt it to take it out.will it need rejetted or anything?

you otta rejet your quad if u do that to keep enough back pressure..my buddy did that to his r n didnt jet it n scorched the head like a 2 stroke

u will need to jet it and u might need to adjust your fuel mixture screw

thanks that save be some calling around.b