QUOTE(xb223 @ Feb 10 2008, 01:33 AM)

for starters i would go back to the one you found that said used at 25,000+ft. i dont know of many sleds running around on top of everest. second, keep your eye out on ebay. you can usually find good used exhausts of all kinds on there with low miles on them. good luck and enjoy the deep snow in alaska...and are you looking for pipes and a can, or just a can, or pipes only?
shoot i thought that that was where everybody rides these days i guess if your scared...... just kidding added and extra 0. these are the pipes i was looking at
Ski-Doo Summit 670 - Summit X 670 pipes
Summit - Summit X Pipes from Jaws
Click on the picture to enlarge
Looking for a power increase for your Summit 670 - Summit X 670? With a set of Jaws pipes you will experience exceptional performance bottom and top end. We packed 12 more hp into these pipes, so hold on. However there is some bad news about these pipes, they are only available for 2500 ft and above, sorry low altitude riders. The rpm peaks out at 8200-8300 rpm. There are obligations to some basic jetting and clutching.
THESE ARE THE MOST POWERFUL AND DEPENDABLE SUMMIT (X) PIPES ON THE MARKET!