250-500cc What pipes are people running on there 2t?

throw it on! its fairly huge so i could see it getting damaged easier than stock..i came from the stock pipe that could be why there was a huge diff for me. if you already have a fmf it may not be as much of an improvement..does your pipe stick out like this? its like a snowmobile pipe in sheer volume! altho im used to looking at 80s pipes as well..
silencer as well..the big diameter turbine style arrestor shouldnt sap too much power..