I've got a 2006 trx450r and im looking for the best exhaust pipe
any recommendations/reasons would be greatly appreciated..thanks!

i was looking at the pro circuit t4 and the fmf factory 4.1

 

Neither of them, but i would say something like a Curtis Sparks. Maybe try posting this in the honda section.

 

My friends dad has a honda 400ex.. hes trying to sell it right now... but it was bored out 30 over and it had a new piston and a goooooddddd exhaust you need to get is a white brothers. that what he had and it was crazy!!!!
If your looking for a good loud pop sound get a white brothers!!!! but im not surre if they make em for a 450! but the fmf 4.1 and the Hmf exhaust are rly good

 

White Brothers isnt even in bus. an more. Dont get an FMF. HMFs are great for te price.

 

my friend has a renegade 800x and hes got dual hmf's and it is LOUD!
I reaally like hmf's... and like the other dude said it is good for the price!