http://www.jtecrc.com/dlengineswraparound.htm heres your wrap around pitts for the dle 85... I have mine on a 1/3 cub which I might be buying this wrap around muffler due to the fact I had to cut half the cowl out just for the muffler and jug, so i'll just buy a new cowl... last I check its up to 6800 with the 26x10