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Exhaust help/tips needed please!
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Posted by: atvhonda-rider

I know quite a bit about quads but never enough! I've been researching exhaust to put on my '01 400ex and i don't know who to go with! My big question is should i get a NICE slip-on and will the stock header be fine for power? OR go for a full system most likely Yoshimura. The slip-on i have in mind is the new motoworks and it is getting BIG raves... any tips or thoughts greatly noted thanks!

Posted by: Barrymaxx

The stock 400ex header flows pretty well, but a full system will always be a little better.

Posted by: dixon_cass

i put an HMF on and it woke my bike up alot. im am very pleased with power output. i also did a K&N with the airbox lid left on. im please with it and it didnt break the bank at $217. good luck on ur decision.

Posted by: drag93ex

i have a fmf powerbomb headpipe on my 400. i could tell a slight difference over stock headpipe. also runnin hmf slip on.

Posted by: 400exridin121

never heard any about the one you are thinking about, but everyone on here is 100% happy with HMF slip ons, i have a full curtis sparks and i couldnt be happier except that its a little on the loud side

Posted by: bagged92sdime

i have a pro circuit..its got a decent hp increase w/ the header and silencer...plus its WAY loud..lol...lot legal here...

Posted by: mod440ex

well a slip on is alright if your motor is all stock, but if you have any motor work done or are planning on doing it later on then you should go with a full system. I personally like my full hmf sport. i had an fmf with powerbomb header and the power hits much harder on my hmf, and it sounds awesome.

Posted by: mod440ex

it all depends on what you have done to your motor, if it is stock then you can get away with just a slipon, but if you have any thing done to your motor or are planning on doing somthing then you should go with a full system. I love my full hmf, i had a fmf powercore 4 with powerbomb header. my hmf hits so much harder than the fmf. i would go with the hmf, oh and it sounds bad ***

Posted by: gilliam2364

i have a yoshi full, and i love it. thats just my 2 cents.

Posted by: atvhonda-rider

2 questions... i had looked into the HMF but decided against it.... what does it sound like? deep grumble... high pitch..? it is most likely between HMF and Yoshimura rs-3 full systems of each... also how well do you like your yoshi gilliam? nice performance and sound? and thanks for helpin me so far all of you... been a great help!

Posted by: mod440ex

the hmf has a deep agressive sound, its not over loud when idleing but has sood has you crack the throttle it puts out one of the most aggressive sounds, where at in missouri are you

Posted by: atvhonda-rider

just realized you're in richmond, im over in Wellington by lexington im sure you kno... we might need to meet up sometime man

Posted by: mod440ex

yeah you will have to get in touch with me sometime so you can test ride it, i work nights so just give me a shout sometime in the afternoon. that way you can get a first hand of what the hmf is like. give me a call 456-5736

Posted by: atvhonda-rider

alright awesome.. i'll let u know.. whats yer name

Posted by: mod440ex

my name is andy johnson, and yours

Posted by: allstock

i've been out of the 400ex scene for a while now so im not sure about any new pipes but my sparks x-6 opened my bike up alot

Posted by: atvhonda-rider

wesley

Posted by: mod440ex

yeah man i am off the rest of the week after wensday, so if you want to hear it just give me a call