what is the top speed of a 2003 kx 250?

bigguns30 · #1 10-17-2003, 10:37 AM

just would like to know the top speed of a 2003 kx 250? thanks.

bigguns30 · #2 10-17-2003, 10:39 AM

how much horsepower also?

Jeff172 · #3 10-17-2003, 12:46 PM

Top speed will vary depending on gearing. It isn't as fast as you want it to be though. On a 2001 yz 250 with stock gearing I was clocked 5th pinned at 51mph. smaller back sproket will get you faster, but you'll loose bottom end power.

Rockey · #4 10-17-2003, 02:01 PM

51? That doesnt sound right at all. I used GPS on my 125 with stock gearing and got 73 mph.

CRacer · #5 10-17-2003, 03:30 PM

I think a 250 would run way past 50!

RM250BS · #6 10-17-2003, 06:03 PM

My 2001 RM250 clocked out at 75mph with the stock front sprocket and a 48 rear (49 is stock). Dirt bike magazine ran a HP chart on the 2001 RM250 and it ran at 43.8hp at the rear wheel. The 2003 KX should top out around 75 and Dirt bike magazine has a hp reading of 42.5hp at the rear wheel

Jeff172 · #7 10-22-2003, 11:04 AM

Stock rear on my YZ was a 52 tooth. With a 49 it would hit around 70mph

Mr2stroke · #8 11-21-2003, 01:18 AM

I dont get it. I thought 250s went over 100mph. I got my 83 cr 125 up to 80mph. It has 6 gears though.

Moto Toad · #9 11-21-2003, 04:18 AM

I heard all modern "out of the box" 250's run in the mid-70mph range.

Yardpro393 · #10 11-21-2003, 05:28 AM

the 450 will hit mid 80's,
so 75-85 would be my guess.

and jeff, if your yz would only do 50 something was seriously wrong with it.

Mecrazyperson · #11 11-21-2003, 08:54 AM

My 02 CR250 was clocked at 92 by the highway patrol out at glamis next to the road. But I had less teeth on my sprocket that weekend.

99kx250rules · #12 02-26-2005, 04:48 PM

I had a buddy of mine ride my Virago along side of me one day. He clocked me at about 72MPH before I slowed down. I use 13/49 sprockets. I try not to do that too much because it is just plain bad for the motor.

1989kx125 · #13 02-26-2005, 06:09 PM

Quote:

Originally Posted by Mr2stroke

I dont get it. I thought 250s went over 100mph. I got my 83 cr 125 up to 80mph. It has 6 gears though.

80 mph

what was your source for getting the speed?

quadfather03 · #14 02-26-2005, 09:17 PM

Here is a suggestion why dont you try a speedometer that rocky mountain sells for 75.00 it measures top speed average speed current speed and time worth the money im getting one soon.

1989kx125 · #15 02-27-2005, 05:34 AM

is it one of those electronic ones with the magnets?

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