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The new HMF is an amazing pipe. Anything White Bros is going to be used, unless you find someone who still has one in stock.
 

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supertrapp 4" RACING SERIES SYSTEM is what i ran when i raced my 300ex. it was the best one that i found. i know it performed better than my fmf and sounded better than a hmf. unless u like that insanely loud, cant hear any thing but the hmf pipe.


 

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supertrapp 4" RACING SERIES SYSTEM is what i ran when i raced my 300ex. it was the best one that i found. i know it performed better than my fmf and sounded better than a hmf. unless u like that insanely loud, cant hear any thing but the hmf pipe.


Hey the hmf pipes are great.Don't be hating.LOL
 

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supertrapp 4" RACING SERIES SYSTEM is what i ran when i raced my 300ex. it was the best one that i found. i know it performed better than my fmf and sounded better than a hmf. unless u like that insanely loud, cant hear any thing but the hmf pipe.


Hey the hmf pipes are great.Don't be hating.LOL
i put a hmf on a 400ex i used to have and the only thing it did for me is give me a head ache. honestly didnt notice much performance gains after i put it on. after it rattled itself apart i put a fmf pipe on it and never looked back. this is just one mans opinion so please dont be sending me hate mail lol
 

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Your the first I have heard of that did not notice gains form HMF and had their pipe fall apart.
 

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Your the first I have heard of that did not notice gains form HMF and had their pipe fall apart.
Me too.Well who knows.Could have been a bad part.
 

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i work in the parts department at a ktm/suzuki dealership in the last 4 years i have had proby 6-8 hmf customers have had the same problem as i did with it falling apart.
 

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I'm not saying you're lying at all, just saying I have never heard of anyone with that problem.
 

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I'm not saying you're lying at all, just saying I have never heard of anyone with that problem.
i didt take it as u didnt belive me, not at all. every one has an opinion and different experiences. no big deal. like my raptor 660 for example. most people will say they are a POS but i have owned it since it was new and never had a problem at all.
 

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I have a friend with the 01 660, his has ran flawless since day 1. Cool, wanted to make sure you didn't think i was being a prick...
 

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no worries man.
 

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witch is the best sound and the best power gain. want it to be deep tone and a crackle.
Im not trying to burst your bubble here but at the end of the day its only a 300ex and your not gunna get a very deep sound with a crackle. About the only way to make a 300ex what they call a thumper really is to cam it and stroke it and bore it and basically just rebuild the motor. Mines got a cam and a full white brothers head pipe and hmf slip on. It sounds ok but not really anything that impressive. Sorry once again im not trying to make you lose hope but yeah. :icon_ nono2:
 

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what is the quietest muffler to gain power?? and would it be different power gains for a fourtrax and not an ex??

i hear about the tractor mufflers, anybody know anything about them??
 

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what is the quietest muffler to gain power?? and would it be different power gains for a fourtrax and not an ex??

i hear about the tractor mufflers, anybody know anything about them??
Supertrapp makes a pipe that you can adjust the sound level. The new HMF pipe actually comes with an insert to keep sound levels around the same as stock.
 

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thats good to know, thanks for the info.

sometimes i like to keep it a little on the quite side but i still want the added power.
 

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thats good to know, thanks for the info.

sometimes i like to keep it a little on the quite side but i still want the added power.
I like to keep mine as quite as possible. It's just easier to ride in a lot more places without annoying other people.
 
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