Exhaust Help Plzzz!!

[2fast4u1715]

I've been looking 4 a good exhaust for a low price 4 my 06 yfz450. I've been looking at hmf but i found a fmf slip- on powercore4 for a 160. I was wonder if anyone knew which muffler made the most power the fmf or hmf sport series?

[Byte]

Its hard to go wrong with the HMF. Very popular nowadays. I would pick an HMF over FMF. I had a choice too and I picked HMF. Very happy with it. My brother had a FMF and honestly, it was junk.

[Moto250X_Rider]

for the 50$ more your getting a better pipe in the HMF better quality and better power curve....and they sound sweet....
i say the HMF thats all i use...and the best one i tried so far out of all of them