Hmf!

[Yfz450dan]

How do they sound?Have good power gains?Also db level?Can you guy give me some info?;)

[JRP]

yea they are nice and sound very good. my friend has the sport series on his 400ex and his quad feels faster... throttle response feels greater. i like the sound of it without the quiet core though..

[stevo450]

i have ythe sport on my yfz and its very loud ............it gave good power every were mostly bottom thoughbut i think there the loudest pipe thats cheap and not a shorty

[hokes]

I have the Sports Series on my YFZ and i noticed quite a difference. I like duning, and noticed huge gains the mid/top end. It is pretty loud.

[Ride1Rob]

HMF is a good pipe and they sound nice too.

[YFZracer#450]

I would recommed HMF to anyone!! I have the Sport and the Ballance.. The Sport was a FS, but I switched over the header for the Ballance.. The Ballance has more Tourqe than the Sport does.. But I love both of 'em. They run about 105db's..