i am thinking about buying an esr pipe, but i am not sure if i should get the trx5 or trx6. i will be riding motocross mostly and i love to have good bottom end and midrange but i do want good top end as well. i hope to have my motor ported and polished this summer for bottom and midrange. thanks for the help [img]i/expressions/face-icon-small-confused.gif[/img]

 

I hear that the TRX-5 is the one to have [img]i/expressions/face-icon-small-smile.gif[/img]

 

The 6 has more low end than 5. I rode a 5 on a pretty stock machine and it revved great. With a little boost in compression and some mods it would have better low end.
ERIC