I am thinking about getting a big gun race exhaust for my rmz 250 I have heard mixed reviews about it though. Does anyone currently use a big gun race exhaust system? If so can you please give me some feedback on them. Also I was looking at a WB exhaust system on motosport.com and it is like 249.95 If anyone has one can you please give me a rating or review of it. I have been riding for a year but I'm progressing fairly quick. I ride motocross tracks mostly and would just like to know what aftermarket exhaust will benefit me the most. Thank you for your help.