has anybody ever bought a dyno port exhaust for a tb 400 is it good or bad.

what other exhausts are good for the tb 400 ??

 

hpd
Ritter
AAEN
HSP

 

My brother had one on his sport 400, had good power and a nice throaty sound. If you're planning on doing porting and stuff later though, I'd got with one of the main polaris people hpd or ritter cycle and stick with them and get the mods that work together.

 

back in '96 i got one on my 4x4 400 scrammy,the silencer was like an "square" shape wich was about the loudest exhaust system si far,the dynoport pipe is a stock revving pipe,wich mean you don't need any clutch
changes at all from stock trim,just fine jetting and airbox mods,
if youre looking to **** off every being on earth,get that one,it sound
cleanly loud,but doens't rev as high as an real aftermarket design pipe and give a very "usable" friendly powerband.

 

I really liked the "dirtbike" sound mine had. That was the only pipe for my old 95 sport. They make a very wide useable power. No clutching needed, but you can still make great power with it. Porting, head mods, etc will still work with it. The top end will not be quite as much because the pipe stays at stock RPMs, but the A to B times will be much quicker.Bubba