I think I was one of the first to go with the Yosh Ti RS5 pipe mod, and it worked very well ! The sled gained about 400 rpms on top at WOT and the holeshot was up as well. Clutching was needed for optimal straight-line performance, but in the deep snow, the added exhaust flow and less weight in the rear made the sled work better. Some guys like the sound, some don't, it's a matter of choice I suppose. For the $150 I spent on ebay on this mod (pipe was brand new in the box, STEAL OF A DEAL), it was well worth it ! If you're looking to spend little and get less weight with more power, your best bet is to look for an aftermarket slip on exhaust for an undertail mounted sportbike exhaust system like on a CBR RR or a ZX R. As was said earlier, custom mods are required to fit this exhaust, but it's not rocket science. I have all kinds of vids on youtube incase you want to watch them, same username when you do your search. :beer;
