400ex

[400xe1999]

i have a 99 400ex with a hmf slip on and a 14 tooth sproket in the front what do u guys think my top speed will be????:D

[jak1389]

man i hate threads like these.:ermm:

[400exdave]

um with that smaller front sprocket, i'd have to say maybe 57-59 mph maybe

[400xe1999]

are u dumb a 300ex goes 57 ....and the 14 tooth is for more top end so there is sumthin wrong with your head a stock 400ex goes like 65

[TwentyBelow131]

A 14 tooth is for more accelertaion. 64mph according to this.

http://home.earthlink.net/~gellett/400ex.htm

[400xe1999]

and a 250ex goes like 53 54 and i doudbt a 400ex is only 3 mph faster....so before you say sumthin......think

[400xe1999]

yea i knew it went around 65.....thinks for helping me out

[400exc]

a smaller sproket is only for more axxeleration, exactally, but it shouldnt ruin the speed, but dont go yellin at 400ex dave

[Crazy400EX]

in his sig it says he has 22's so it would be around 70

[FoxRacing81]

Originally posted by Crazy400EX
in his sig it says he has 22's so it would be around 70

With a 14 tooth? Ya right dude!


I'm thinkin about 63 tops. Mine didn't do anywhere near 60 with my 14 tooth and 20's....or atleast it didn't feel like it.

[Crazy400EX]

type it in the thingy there

[400exc]

mine went round 72 with stock sproket, and only a K&N filter, why does all of urs only go like 65?

[47501exracer]

Originally posted by 400xe1999
are u dumb a 300ex goes 57 ....and the 14 tooth is for more top end so there is sumthin wrong with your head a stock 400ex goes like 65


A 14 tooth front sprocket is not for top end dummy. It is for more torque and acceleration and it will actually go slower than a stock quad since the stocker has a 15T front sprocket.

[reddeisel]

yeah the 14 thooth is for the lower gears so think before you call the guy dumb

[<DRS>GPF]

Originally posted by 400xe1999
are u dumb a 300ex goes 57 ....and the 14 tooth is for more top end so there is sumthin wrong with your head a stock 400ex goes like 65


uhh... look einstein.... sit back down, take your ritalin and use a pencil before you pipe in on info that your obviously not up on..

anyone with a slight mechanical aptitude will tell you that its going to be slower than a stock setup.. (i mightve used too many big words and lost him though..)

to answer the question...
i weigh 190 w/gear, have some "meaty" 22inch 4ply tires on the rear(a heavier tire like yours), 14t/38t sprocket setup and i run my tires at around 3.0 to 3.5lbs..

id guess i get low 60's on flat, hard packed dirt and im sure ill gain some on asphalt..

if i tighten up the tires, hand the key to my 10yr old and point him down the pavement, im sure itll see about 70.. (but thats not very likely to happen..)

[400exbiggun]

Originally posted by jak1389
man i hate threads like these.:ermm:

[04exrida]

my stock ex was goin 65, so i would say yours is around 70.

[fasterthanyouex]

quote:
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Originally posted by jak1389
man i hate threads like these.
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yeah

[rooster_20]

i have 22's and stock sprocket and have just had mine 72

[eslride1]

ok this is NOT the setup i have on my 400 but according to http://home.earthlink.net/~gellett/400ex.htm if you take a stock 400ex and put a white bros rev kit in it (allowing it to rev to 10300 supposably), put 22" tires on it, a 16 tooth front sprocket and a 36 tooth rear sprocket then it will go 106 mph i dont find that possible at all and it says that completely stock it will go 77 which is just 2 mph behind the 450r (in reality) i realize that the 450r is geared for acceleration a lot more then top speed but that doesnt't possible that a stock 400ex is only 2 mph slower then a stock 450r at top speed so someone please let me know if they use that website and get a result they think is accurate

[rooster_20]

eslride1 ok this is NOT the setup i have on my 400 but according to http://home.earthlink.net/~gellett/400ex.htm if you take a stock 400ex and put a white bros rev kit in it (allowing it to rev to 10300 supposably), put 22" tires on it, a 16 tooth front sprocket and a 36 tooth rear sprocket then it will go 106 mph i dont find that possible at all and it says that completely stock it will go 77 which is just 2 mph behind the 450r (in reality) i realize that the 450r is geared for acceleration a lot more then top speed but that doesnt't possible that a stock 400ex is only 2 mph slower then a stock 450r at top speed so someone please let

I think the more varibles that you add like a rev kit and more and more sprocket changes the more it takes away from the accuracy, I think that site is mostly for stock engines with small sprocket and tire alterations.JMO

[WheelieMan4]

Originally posted by 400exc
mine went round 72 with stock sproket, and only a K&N filter, why does all of urs only go like 65?

same here. thats all i have in mine and i go 70ish

[blakefoote]

Originally posted by 400xe1999
and a 250ex goes like 53 54 and i doudbt a 400ex is only 3 mph faster....so before you say sumthin......think

lets see here....... :huh the 14 tooth front sprocket takes away alot of top end but gives alot of bottom end. So think before you say something.;). I have a 14t front sproket and itl only run like 50 somethin.

[muddy400EX]

haha this is funny. this guy calls other people dumb but then says that a smaller front sprocket adds top end:ermm: with that 14 its not gonna have a very high top end but the huge tires you have might give it some top end so its prolly around stock top speed:ermm: