All Things Moto! Web Forums

Go Back   All Things Moto! Web Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Kawasaki

     
Reply
 
LinkBack Thread Tools
  #1  
Old 10-17-2003, 11:37 AM
bigguns30's Avatar
Intermediate Class
 
Join Date: Oct 2003
Last Online: 04-11-2006 09:42 PM
Location: big rock, va
Posts: 111
flasher what is the top speed of a 2003 kx 250?

just would like to know the top speed of a 2003 kx 250? thanks.
Reply With Quote
  #2  
Old 10-17-2003, 11:39 AM
bigguns30's Avatar
Intermediate Class
 
Join Date: Oct 2003
Last Online: 04-11-2006 09:42 PM
Location: big rock, va
Posts: 111
Default horsepower

how much horsepower also?
Reply With Quote
  #3  
Old 10-17-2003, 01:46 PM
Jeff172's Avatar
Intermediate Class
 
Join Date: Aug 2003
Last Online: 05-15-2006 09:13 PM
Location: Strongsville, OH
Posts: 318
Default Re: what is the top speed of a 2003 kx 250?

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.
Reply With Quote
  #4  
Old 10-17-2003, 03:01 PM
Rockey's Avatar
Pro Class
 
Join Date: Jan 2003
Last Online: 12-26-2006 06:35 PM
Location: Westford, MA
Posts: 1,884
Default Re: what is the top speed of a 2003 kx 250?

51? That doesnt sound right at all. I used GPS on my 125 with stock gearing and got 73 mph.
Reply With Quote
  #5  
Old 10-17-2003, 04:30 PM
CRacer's Avatar
Expert Class
 
Join Date: Apr 2003
Posts: 890
Default Re: what is the top speed of a 2003 kx 250?

I think a 250 would run way past 50!
Reply With Quote
  #6  
Old 10-17-2003, 07:03 PM
RM250BS's Avatar
Novice Class
 
Join Date: Oct 2003
Last Online: 01-02-2005 12:40 PM
Location: Middletown, Ohio
Posts: 72
Default Re: what is the top speed of a 2003 kx 250?

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
Reply With Quote
  #7  
Old 10-22-2003, 12:04 PM
Jeff172's Avatar
Intermediate Class
 
Join Date: Aug 2003
Last Online: 05-15-2006 09:13 PM
Location: Strongsville, OH
Posts: 318
Default Re: what is the top speed of a 2003 kx 250?

Stock rear on my YZ was a 52 tooth. With a 49 it would hit around 70mph
Reply With Quote
  #8  
Old 11-21-2003, 02:18 AM
Mr2stroke's Avatar
Intermediate Class
 
Join Date: Sep 2003
Last Online: 04-23-2004 05:56 PM
Posts: 100
Default Re: what is the top speed of a 2003 kx 250?

I dont get it. I thought 250s went over 100mph. I got my 83 cr 125 up to 80mph. It has 6 gears though.
Reply With Quote
  #9  
Old 11-21-2003, 05:18 AM
Moto Toad's Avatar
Beginner Class
 
Join Date: Nov 2003
Last Online: 09-16-2007 02:04 PM
Location: Florida
Posts: 36
Default Re: what is the top speed of a 2003 kx 250?

I heard all modern "out of the box" 250's run in the mid-70mph range.
Reply With Quote
  #10  
Old 11-21-2003, 06:28 AM
Yardpro393's Avatar
ATM! Pro Class
 
Join Date: Jan 2003
Last Online: 07-13-2005 04:00 PM
Location: coast of NC
Posts: 3,765
Default Re: what is the top speed of a 2003 kx 250?

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.
Reply With Quote
  #11  
Old 11-21-2003, 09:54 AM
Mecrazyperson's Avatar
Banned
 
Join Date: Nov 2003
Last Online: 05-12-2008 04:26 PM
Posts: 1,302
Default Re: what is the top speed of a 2003 kx 250?

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.
Reply With Quote
  #12  
Old 02-26-2005, 05:48 PM
99kx250rules's Avatar
Expert Class
 
Join Date: Oct 2004
Last Online: 02-17-2011 07:30 AM
Location: Tahlequah, OK
Posts: 516
Default Re: what is the top speed of a 2003 kx 250?

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.
Reply With Quote
Sponsored Ads
  #13  
Old 02-26-2005, 07:09 PM
1989kx125's Avatar
Expert Class
 
Join Date: Oct 2004
Last Online: 03-04-2006 12:35 PM
Location: long island, NY
Posts: 907
Default Re: what is the top speed of a 2003 kx 250?

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?
Reply With Quote
  #14  
Old 02-26-2005, 10:17 PM
quadfather03's Avatar
Pro Class
 
Join Date: Jan 2004
Last Online: 03-28-2014 06:53 PM
Location: Liberty, OK
Posts: 1,036
Default Re: what is the top speed of a 2003 kx 250?

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.
Reply With Quote
  #15  
Old 02-27-2005, 06:34 AM
1989kx125's Avatar
Expert Class
 
Join Date: Oct 2004
Last Online: 03-04-2006 12:35 PM
Location: long island, NY
Posts: 907
Default Re: what is the top speed of a 2003 kx 250?

is it one of those electronic ones with the magnets?
Reply With Quote
  #16  
Old 02-27-2005, 08:00 AM
AndrewPA's Avatar
Intermediate Class
 
Join Date: Jul 2003
Last Online: 07-14-2009 09:03 AM
Location: Burlington, Ontario, Canada
Posts: 364
Default Re: what is the top speed of a 2003 kx 250?

I know the post was originally asking about a standard KX250 but just out of interest, Dirt Bike Rider magazine in England did a test years ago with a CR500 fitted with road tires. They fiddled with the gearing for speed rather than acceleration and they got, if my memory serves me correctly, 115mph.
Reply With Quote
  #17  
Old 02-27-2005, 08:42 AM
1989kx125's Avatar
Expert Class
 
Join Date: Oct 2004
Last Online: 03-04-2006 12:35 PM
Location: long island, NY
Posts: 907
Default Re: what is the top speed of a 2003 kx 250?

thats sounds possible to me. i've heard they do like 95 with the stock gearing and tires.
Reply With Quote
  #18  
Old 02-27-2005, 10:58 AM
Mike's2003YZ250's Avatar
Novice Class
 
Join Date: Oct 2004
Last Online: 02-21-2007 04:36 PM
Location: New Jersey
Posts: 68
Cool Re: what is the top speed of a 2003 kx 250?

I like threads like this, and it seems you get much better responses here than somewhere else I am a member as well. : The "other" forum I am a member of, all you do is get made fun of for asking a top speed question. Of course top speed doesnt matter much on a motorcross bike, but some people like to blast their bikes down a straightaway, like me! Come on, Im sure we all can admit we dragraced someone atleast once to show the other guy whos boss! Since I like topics like this, I wanna add a little to it. I have read that the top speed of my bike, the 03 YZ250, is about 75-77mph. My gearing is the stock 14-50. What I was wondering is how many mph would you gain in top speed by going one tooth bigger in the front or one tooth smaller in the rear. I was guessing about a 5mph gain for every tooth change, or maybe its not that much?? Going up one on the front would be a bigger change than down one on the back tho I would assume. So one up on the front may give you 5 extra mph, but down one of the back wouldnt maybe?!? Just curious, thats all. I appreciate the help. Mike
Reply With Quote
  #19  
Old 02-27-2005, 11:06 AM
OLDMXRACER 393's Avatar
ATM! Pro Class
 
Join Date: May 2003
Last Online: Today 04:24 AM
Location: Southern Illinois
Posts: 3,577
Default Re: what is the top speed of a 2003 kx 250?

Quote:
Originally Posted by Mike's2003YZ250
I was guessing about a 5mph gain for every tooth change, or maybe its not that much?? Going up one on the front would be a bigger change than down one on the back tho I would assume. So one up on the front may give you 5 extra mph, but down one of the back wouldnt maybe?!? Just curious, thats all. I appreciate the help. Mike
I think to figure that would take a math equation that's WAY above my head. Wouldn't the change vary with the multiplication factor of the rear sprocket also? Oh my head hurts....DCOX, where are you?!?!?!
Reply With Quote
  #20  
Old 02-27-2005, 11:46 AM
Kev's Avatar
Kev Kev is offline
Novice Class
 
Join Date: Feb 2004
Last Online: 05-17-2005 03:41 PM
Location: Newfoundland, Canada
Posts: 60
Default Re: what is the top speed of a 2003 kx 250?

With stock gearing I can about 102 out of my cr500, if i drop a tooth or two on the rear , Id probally hit the 105-110 mark
Reply With Quote
Reply

  All Things Moto! Web Forums > Dirt Bike - ATV - Suspension Forums > 2-Stroke Dirt Bike Forums > 2-Stroke Dirt Bikes - Kawasaki


Bookmarks

Thread Tools


Similar Threads for: what is the top speed of a 2003 kx 250?
Thread Thread Starter Forum Replies Last Post
Changing kx450f 2006 4 speed to a 5 speed box Team Green 4-Stroke Dirt Bikes - Kawasaki 5 06-17-2007 02:27 PM
4 speed or a 5 speed for trail/motocross? Stryke 4-Stroke Dirt Bike Bike Forums 19 02-21-2006 07:00 PM
Have any of u made a 4 speed a 5 speed? Stryke General Discussion 10 10-05-2005 12:29 PM
2003 Memorial Race Sporsors [Oct. 19, 2003] Motodad393 GMB Races 11 09-30-2003 12:57 AM


All times are GMT -6. The time now is 06:26 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright ©2002-2014, JDub Consulting, Inc. All Right Reserved.