speed of 400ex

[400xe1999]

how fast does a stock 400ex go?.....and how fast does a 400ex with a pipe and a jet kit go?

Originally posted by 400xe1999
how fast does a stock 400ex go?.....and how fast does a 400ex with a pipe and a jet kit go?

stock- 65+

with your mods- 68-70 maybe?

mine went 70.4, with stock gearing, 416, 20 inch tires, stock cdi, stock exhaust, stock timing..

Now with 22's it would probably go a tad faster... but may have issues pulling the bigger tire.. you can have a BANGIN *** motor, bangin pipe, but with the stock gearing and stock cdi, your still going to go the same speed, just will get there faster

btw, TRY THE SEARCH FUNCTION! YOULL BE SURPRZED AT WHAT YOU FIND!

Jesse

[future 450?]

2004 and older go 67. 2005 goes 55 but in 18sec. The pipes and jets jus help it get 2 the top speed faster they make no difference
in speed

[yamablaster24]

2005 only goes 55 eh? :eek2:

With stock gearing and tire sizes and CDI no matter if you have a big bore 450 stroker or stock bike you will do the same speed.

[chadmel]

Check out the May issue of ATV Sport. 55.7 MPH @ 3500 ft. elevation. Stock bike. Hope that helps.

[darkstar]

Originally posted by chadmel
Check out the May issue of ATV Sport. 55.7 MPH @ 3500 ft. elevation. Stock bike. Hope that helps.


If you are right then that is only a little faster then a stock yamaha blaster.:(

[NacsMXer]

Originally posted by darkstar
If you are right then that is only a little faster then a stock yamaha blaster.:(

Yep that's right. That 14T front and 39T rear sprocket really kills the top speed of the 2005. Switch the sprockets out for a 15T/16T front and a 38T rear and you'll be doing 65+ MPH. Easy mod. Didn't they also lower the ratio of the tranny gears on the 2005? If they did, it would make it even harder to compensate for the speed loss.

[400exc]

mine is a 2002, and when i got it, it was all stock, and only a year old, and it went 74. i dont know why, but i got clocked at that

[darkstar]

how did you get clocked with a gun or were you driving along side a car

[bonified5]

so whats the gearing of the ex's before 05?

[NacsMXer]

15/38

[EX_DownUnda]

I have an 05 and was going along side my friend on his bike(has a speedo) and I did 110 Kilometers per hour which is 68MPH. This is at sea level. Maybe his speedo is off but I was definately going faster than 55.

[Christoph]

are you guys talkin miles or kilometers, most guys on this site are from U.S., im from canada and we use both measurements up here.

[enduro400rider]

anyone runin a 16T up front 36 in the back and 22 inch rear tires? i put that combo on yesterday and my 400 seems really fast top speed wise. fast enough to pass cars on a 45 mph road at cruising RPM in 4th i had it toped in 5th but it was shakin like a mother because of the bad rear rims. just wondering if anyone knows the top speed of that combo cuz i dont have a radar gun

[44oEX]

Originally posted by Christoph
are you guys talkin miles or kilometers, most guys on this site are from U.S., im from canada and we use both measurements up here.

well if they say it goes 55-70 it's MPH if they say 100-110 it's Km/h

Oh I got my 500 to go close to 90MPH haha must sucks to be stock :devil:

[troutman561]

there is no way the 05' is that much slower than previous years, stock my 05' was only about 1 mph slower than a stock 04'

[Joe400ex]

i want to geta modded shee just to go 100+. thats gota be nice

[44oEX]

well a local yamaha company built a 409 shee, and they raced it agains the company truck witch goes 100mph and the claim the truck can't keep up with the shee in top speed:eek2:

[04'400ex'er]

when my bike was stock, it clocked on a gun at 58mph. my bros stock banshee clocked at 62. And a modded banshee ran 63. all on a radar gun.

[2004400exa]

mine does around 65 to 70 depends on which way the wind is blowin ..lol

[400exstud]

my 400 with only a K&N did 68.4 with a Garman GPS strapped to my chest protector, now I have a 39 rear sprocket and have not checked that speed.

[honda400ex2003]

My 400ex did about the same as my friends DVX 400. He said his goes 75. I think it is alittle fast but he used a gps. I was right next to him everytime we raced down the road. We did 4 runs he edged me out alittle twice and I edged him out twice. but we were almost the same. It was like half a legth of an atv. All I have is a kandn t-4 and a dynojet jet kit with the stock gearing and tires. Just my two cents though. Steve

[honda400ex2003]

My 400ex did ~69 with 21" mud sharks and a 39 rear sprocket. I know it did ~69 because it raced my friend with a raptor 350. he had his radared at 68.7mph and I was pulling ahead the whole time we raced plus I got to top end alot faster than he did. Steve

[hondasmith]

well i dont got no 400ex but i do got a 300ex that runs 66 mph, i got clocked when i was racing my friend, he got a 350 warrior with pipe his will run 63 and my 300ex is piped jeted and 22" razer on the back with stock gearing

[future 450?]

Originally posted by EX_DownUnda
I have an 05 and was going along side my friend on his bike(has a speedo) and I did 110 Kilometers per hour which is 68MPH. This is at sea level. Maybe his speedo is off but I was definately going faster than 55.

u werent doin over 55 i mean it was in a magazine nd clocked at 55 in 18.5sec

[honda400ex2003]

My sister has a 300ex that's all stock except razr tires all around and it took the 350 raptor off the line and for about 100' until he hit sixth gear. His raptor 350 has a 2+ tooth front sprocket and a pipe. It still sucks. My 400ex with stock gearing will just walk all over him. Honda's rule!!! Steve

[bigjjohnson369]

me and my cousin were racing he has a 2004 and i had the 2005 and i had big tires on and he beat me on takeoff but we were dead even in speed.

[xx3003xrdrxx]

my 300ex with yoshi full , pro flow air intake , uni filter , 22' tires, will do 67. and i know that this is right because i have checked it with a gps , beside a car , and again with a different gps .

[Jared Hamilton]

i topped out on a high way that had a radar board that tells your speed , and was doing 68 on a stock 2000. a couple days later me and a neighbor raced his 05 aganist my 00 and he was about 1/2 ft. in front of me topped out. this was in a 3mile flat field.for that matter a 05 400ex runs faster than 55 mph.

jared

[acesfull]

If you guys really want to experience speed then get yourself a YFZ 450. I have both a 05 400 and a 05 YFZ, both have full exhaust, k & n, and are jetted correctly. The YFZ is just way more fn to ride, and it sounds better too!

[400Rider022]

05 goes way more than 55 pal ::macho

[key4202003]

acesful must have fallen down and became filthy...rich;)

WHO CARES ABOUT TOP SPEED, ALL THAT MATTERS IS HOW FAST IT WILL TOP OUT!!!:devil:

[44oEX]

ehhh NO. if it was everybody would be running 18's with a 13 and 42 gearing,:huh you would only go 40 but man would it get there fast.:eek2: top speed it not important in XC and in some MX but for trail riders it is.

[lildude]

i put a 14 tooth front sprocket on my ex and it goes 63, it went 68 stock, i dont see how the 14 tooth could effect the 05's 13 mph

[blakefoote]

mine has been clocked at 85 with the mods listed.

[44oEX]

Originally posted by lildude
i put a 14 tooth front sprocket on my ex and it goes 63, it went 68 stock, i dont see how the 14 tooth could effect the 05's 13 mph

well I don't think it only does 55 but, honda change the gear ratios, not just the sprockets.

[muddy400EX]

Originally posted by blakefoote
mine has been clocked at 85 with the mods listed.


theres no way! all you have is a pipe and filter:huh

[muddy400EX]

Originally posted by acesfull
If you guys really want to experience speed then get yourself a YFZ 450. I have both a 05 400 and a 05 YFZ, both have full exhaust, k & n, and are jetted correctly. The YFZ is just way more fn to ride, and it sounds better too!


im sure most people would love to have a 450, but if there like me they dont have 7 thousand dollas!

[blakefoote]

Originally posted by muddy400EX
theres no way! all you have is a pipe and filter:huh

I dont know where the power is coming from but it was clocked at 85 and I passed a truck going 75 like it was sitting still. I just changed my tires though. It had 22s on the front and 20s on the back. And it also has a jet kit.:rolleyes:

[muddy400EX]

Originally posted by blakefoote
I dont know where the power is coming from but it was clocked at 85 and I passed a truck going 75 like it was sitting still. I just changed my tires though. It had 22s on the front and 20s on the back. And it also has a jet kit.:rolleyes:


a jet kit wont give you any top end tho. i have the same mods as you and i know im definately not doin 85! do you have it geared for top end? if not, maybe you have a majic motor or sumthin then, iono

[journeyman]

all this talk of a 2005 400ex only going 55mph is BULL@%#&!!!!!!

there is no way

the first day I got my 05 i was runnin only maybe 1 bike length behind a stock 03 z400....with a hmf slip on,uni air, jet kit and white brothers cdi, im now beating the z400 by 2-3 bikes....

so maybe it was posted in the magazine or what not...but it is WRONG...it must be a misprint or something because the 05 is haulin alot more ***** then 55mph!!!!!!