Which is louder

[rhoadsM125450]

Which pipe is louder for a 450r the regular HMF or the BB......in a full system
thanks in advance

[Blasta400ex]

i think the regualr hmf is louder then the bill ballance

[rhoadsM125450]

are the power increase about the same with the two or is there a difference...and if so what is the difference?

thanks in advance

[dn1911]

the power difference is supposed to be different w/ the BB taking a more low-end approach for the XC guys in the woods. as far as sound that would be a question for HMF. they have their own forum section on their website where you can ask them.

[rhoadsM125450]

Thanks!