I have a Daytona 2006 955 SEi and I ordered an ART pipe from England. It is a high mount carbon fiber canned pipe and it is excellent. I am going to retro fit a bit to place under the passenger seat a bit more to accomodate a passenger more comfortably. I dig my ride, I power commandered it and I have about 138hp and 79 ft lbs of torque at the rear wheel. It is a great bike except for my starting issues which I just posted a comment about. Please let me know if you are aware of my starting issue, as the dealer here in the USA are hopeless with this bike. 
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