After eyeballing this pipe for a few weeks, I finally HAD to buy it after my KTM factory one got pancaked between a boulder and the frame (actually WAS an accident). This pipe is the perfect addition to woods riders that need more low end torque to get over a log, up a rock garden, up narrow slick singletrack hillclimbs etc. The power difference is well worth the price. Durability is there too, but I haven't had a direct hit on this one. Installation on my 2004 200EXC was not what I had in mind.....pipe hit the kickstarter, so I had to move the lever one notch up, and now the starter lever rubs the bottom of my tank, but not bad. Would buy again!