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View Full Version : will my 400ex run with a kfx?


zoom400ex
07-09-2003, 07:51 AM
I have a 400ex with uni filter, shaved fenders, whitebros e series, and has a 155main jet in it.....will it come close to running with a stock kfx going wide open?? i have a friend that just has shaved fenders on his 400ex and he beat a z400 wide open so..........i was wondering if i could stand a chance
UglyMotha™
07-09-2003, 07:53 AM
they never gave me a problem when my bike was stock except for a e series slip on k&n dynojet kit and a aluminum airbox and removed choke ;)
250x#93
07-09-2003, 07:59 AM
Hell ya:devil:
Notu400ex
07-09-2003, 08:53 AM
I am confused. Your friend has a totally stock 400ex with shaved fenders that beats a KFX wide open and you are wondering if your 400ex that is more modified will?

I guess it depends on how well you jetted yours.
spud400ex
07-09-2003, 08:57 AM
i can pull a stock z-400 of the line in a drag race but i missed a shift and he passed me. he had 20" straight paddle and i had 21" dune sliders, which really suck becuase of the .5" tall paddles.
zoom400ex
07-09-2003, 02:29 PM
Originally posted by Notu400ex
I am confused. Your friend has a totally stock 400ex with shaved fenders that beats a KFX wide open and you are wondering if your 400ex that is more modified will?

I guess it depends on how well you jetted yours.



yes but that same friend beat me with my mods on his stock 400ex:eek:
RiPPiNiTuP7
07-09-2003, 02:33 PM
Z's aren't a problem.
Chanman420q
07-09-2003, 02:49 PM
just ram him, and bend his frame, he wont pass ya
400exbiggun
07-09-2003, 02:52 PM
what?????
my friend has no problem passing me wide open, we went on the road, and a z-400 has more topend.
---he has 21' mudsharks
k&n
e-series slipon
---i have 22' maxxis surtraks
jetkit
big gun slipon
k&n
ground welds in header
and what ever is in sig

and no you can say that i just cant ride, cause i smoke him everytime in a drag. We even switched bikes and i still won, but my ex will never catch up on topend. I was going 5th pinned and he came flying past me so, i don't know.
Justin St.Jeor
07-09-2003, 04:28 PM
my riding buddy has a kfx we bought them at almost the same time, same hours on the motors. We weigh almost exactly the same. mine has a filter, and his has the spark arrestor removed. It is so even that you wouldn't be able to tell a difference. and mine wheelies better, his just stays cooler, darn water cooled.