Does anyone have the FMF Powercore 4 and do you like it im just looking to put something on my 400ex and reading about the powercore 4 it sounds good they say power though the whole power band from bottom to top end. Please let me know what you guys think or if there is something better.

 

i have one on my modded 300ex, its a good pipe but its WAY TOO LONG of a silencer! it sticks out past the stock grab bar almost 3in, and 2inches past my extra long grab bar. if you dont do any wheelies you will have no problem, but if you do come back on the grab bar you will need to modify it.

im trying to cut about 3inches off mine, but cant get the damb thing apart! any help about the internals of this pipe would be great!

 

It does not stick out on the 400EX. The 300EX is shorter, so thus it sticks out a little. I rode a 300EX with one for a dozen years (probably while you were still in diapers)....no big deal! Learn to live with it!!!

 

Excellent muffler! I would however go with the Q4 if I had it to do over again. Either of these will work best with the PowerBomb Header. You will want to do your airbox/air filter as well, and of course a rejet....

 

i cracked my headpipe because the exhaust stuck into the ground and pushed the whole pipe forward...sorry i dont want to live with a broken headpipe and too long of a mufflel. just got the money for a new headpipe and wont have it happen again.

 

sorry if i came across ruff, but it just ticks me off that fmf sopped selling the mega max system for smaller quads and now i have a pipe thats too long for my atv.

 

fmf powercore is good just LOUD. if you live near a bunch of people id go for the Q4. if your looking for a slip on which is really all you need if you only have minor mods, i like the Lexx for sale on ebay.not to loud but louder than stock, good quality, looks nice and is under 200 bucks shipped. remember to rejet.

 

I run the Quietcore, but still I would never call it "stealthy".

 

i have a powercore 4 for my 300ex and it gave it a lot more power. i got a piece of angle made an extension so my wheelie bar sticks out past the muffler. i also bought a kn filter and rejetted with a 130 main and a 40 pilot. Great Pipe

 

I put the FMF Power Core 4 on my 400ex. I love it. If you leave the spark arrestor in, its pretty quiet. If you take it out, its pretty damn loud. I could hear my wheeler about an 1/8 mile away without the spark arrestor in it... The pipe does NOT stick out past the grab bar, and is a bit shorter, and has less of an 'upward angle' than the stock one. Looking for a header for this wheeler. I had an FMF Hi-Flow Stainless on order, but they told me it wasn't available anymore....

*******Please note, I have new hole-shot's, it was winter and I wasn't going to burn up my good tires screwing around in the snow.