i am gogin to get a full system exhaust for my 05 yfz 450. and was wondering which is the best pipe for performance to race gncc races. i am looking at the hmf bill ballance signature series full system exhaust. but ho wmuch hp gains does it get and how deos this compare to the other pipes out there. if this isn't the best performance pipe which one do you think is and give reasons.money isn't a problem

 

The regular canister is producing 5 peak HP for slip on and for full system 6.3 HP. I would venture to guess the carbon is near that range. Take things with a grain of salt, this info is from HMF's site.

http://www.hmfengineering.com/yamyfz450.html

My Wolverine has an HMF pipe and I really like they way it uncorked my old 2 valver. It's pretty loud, but you can get a quiet core insert. I bet it will really make your 450 sing! The painted canisters and carbon fiber look really nice too in my opinion.

 

is this the exhaust bill uses or is it just a promotion thing?

 

??

 

It is most likely almost the same, but not as good as his pipe.

 

yea its close but not the same, come on he wouldnt give away something that makes him fast.