t4

[BlaineKaiser450]

I think im goin with a sparks but how well does the pro circuit t4 work?

[procircuit406ex]

I wouldnt even consider putting another pipe on my 400 and the guys I ride with are the same way about thiers. Theres a guy I ride with that has a Sparks on his 450 and he said he wishes he would have went with a Procircuit

[WB450r]

i have a pro circuit t-4 slipon on my 05 450r and i luv it......it has excellent low to mid range power and is very loud.......i bought mine for $359......but i think the prices have gone up a little bit......

[Johnny B]

i geuss its personal opnion but i wouldent trade my sparks for any other.

[the 97]

do any of you sound problems were you ride??????????????? tracks testing for sound????????

[procircuit406ex]

Ive never had a problem with mine

[whiteboycustom]

rossier is a great pipe for the money u spend on it, about 400 roughly for a full exhaust