today i ordered a curtis sparks x6 complete racing pipe for my 440ex. i was wondering if there is anyone out there that has this pipe and how is it? nice put out? i hear it rumbles?
ill tell how it goes when i get it on. thanx for any comments.

 

I have the T4 pipe on my 400. You will not believe the difference that it will make. What how you run the clutch cable around the header pipe. Also, keep and eye on the packing if you tend to run the quad wide open on TT or flat tracks. Your friends will need earplugs from the loud sound, but on a race track it is OK. Play riding, they can hear you coming.