I have a 2004 Honda 450r that i race hare scrambles with in florida. Ive been adding small parts here and there for the past year such as skid plates, radiator shrouds, handle bars, steering stablizer. I have recently had a hrc kit put in and iam trying to find the best exaust that will mesh with the kit. Iam thinking White brothers E2 pipe but not sure. I dont know if the rejetting for the exaust will mess up the jetting for the cam? And what would be the best rev box to go with them both? Thanks for any help you can give.

Jerod

 

All studies show that the White Bros. aluminum series pipes work well on the 04 - 05 TRX450R. The FMF Factory 4 system is right up there too,Yoshimura is rated #2, but the Rossier pipes work the best. The FMF is rated #4 for the 450R, but its the cheapest out of the top 5, so thats the one i'm going with.