Does anyone know anybody that is running an FMF 4.1 slip-on???

[07black400ex]

If so, how does it sound and how do they like it?

[Jonhyboi]

wasn't this question already asked?
I heard from the 04-05 450rs they were pretty decent.. dunno about the 06+

[07black400ex]

It was asked but absolutely no one replied... I know people are loyal to the brands they become accustomed to, but dang someone on here has to know someone who is running one or has run one. LOL!!!

[exrider12]

No one runs them because they arent any good. The only quads iv seen them on are polaris's and ktms.

Just pick up an hmf slip on if your looking for slip ons.

[jkiserracing]

Well actually I have a Powercore 4 which has got to be simalar. I also have the powerbomb header pipe. All in al I like mine and it sounds great. I think it performs as good as most...however I have only had a pro circuit other than this one and they both seemed to be about the same

[miles Machine]

I had a 4.1 on my 06 i i loved it has a nice throaty sound but not to obnoxiously loud and made good power....but getting it off the bike and seperated from the head pipe is a ***** when it comes time to do a rebuild thats y i sold it...id stick with HMF or sparks honestly

[07black400ex]

Why was it a problem getting it off?

[miles Machine]

were the mid pipe and the head pipe meet was a tight fit

[07black400ex]

I know most people are running other pipes but I just like the looks of the FMF and I don't want a loud *** pipe. LOL!!! Did you have to re-jet when you ran it? The dude at FMF told me you did not as well as the Honda mechanic at the dealership. My quad is already jetted since I have the HRC kit so I'm curious as to whhether or not they are correct.

[miles Machine]

for a full system yes...for a slip on its more of a feeler most dont but depending in elevation and air temp its a crap shoot

[trx400 rider]

I love my hmf just really loud any one know what i can use to make it a lil. quieter

[Jonhyboi]

i've been thinking about buying a 4.1 an sticking it with my HRC header.. Just need more opinions lol.

I've seen alot of Can-Ams run them.