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Thread: Top speed of a stock 250SX ?

  1. #1
    Join Date
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    Top speed of a stock 250SX ?

    What's the top speed of a stock 250SX ?? (approximately)
    Go big or go home!!

    Current rides:
    '85 250SX - Sold...I had no choice! Need money...
    '93 Fourtrax 300 4x4 (27" Super Swampers)
    '95 Yami VK 540

  2. #2
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    Re: Top speed of a stock 250SX ?

    Quote Originally Posted by 250SX_rider
    What's the top speed of a stock 250SX ?? (approximately)
    Feels faster!! but I think only about 45 to 50 MPH. Still fungetting there though!!
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  3. #3
    bbechtel16 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I've heard between 44 and 60, so who knows really?
    -'86 ATC 250SX: No longer mine... Complete 350X front end, Corbra Megaphone system, 350X carb with UNI dual stage foam & outerwear bolted driectly up, Powroll/Rocky 260cc bore 10.5 to 1 compression piston.

  4. #4
    Join Date
    May 2002
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    Cortland, NY
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    Should be right around 55mph. I've got an old mag where they tested the dx 225 and 250sx and they were both right around 50-55mph on top.
    http://photos.yahoo.com/dynofox250 (TF 03 pic's)

    Trikes: Restored '86 ATC 250r, original and mint '83 185s

    Quad: '86 TRX 250r

    Sled: Rev X 800ho mod

    Bike: '00 ZRX 1100

    TF '03 and '05 Survivor

  5. #5
    Join Date
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    Roanoke, VA
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    The SX will do more than 55 stock. My Foreman will do 56 and I KNOW that the SX will beat it in a drag. I say it would do about 60-62
    [20:55] <waterpumper> putting a racing pipe on a Foreman is like putting a high dollar bikini on a 400 pound chick...just because it fits doesn't mean it looks cool

  6. #6
    Timbo1 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I've been tested speed wise several times and my friend's 2001 tw200 speedometer had just been calibrated, so he says, and he said i was going 65 with 22x11-8 dirtdevils and a knobby on the front, I'll get the old gps out tommorrow and see what i can come up with...........just my 2 cents


    I have more toys than you, I promise

  7. #7
    Join Date
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    Shediac, New Brunswick
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    re:

    Quote Originally Posted by Dynofox
    Should be right around 55mph. I've got an old mag where they tested the dx 225 and 250sx and they were both right around 50-55mph on top.
    Hey dynofox do you happen to have or be able to scan this mag section and send it to my email address or post it here?
    '04 450r, hr +3 stroker, s2 hotcam
    '84 Honda 200x
    slow restro


    Previous rides 82 Yamaha yt175, 85 Yamaha 225DR, 84 Honda 200M, Ski-doo Olympic 340

  8. #8
    edge is offline New to the board Arm chair racerNew to the board
    Join Date
    May 2003
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    mine does about 55 completely stock.
    Hondas
    '82 110
    '85 125M
    '86 TRX 350
    '92 TRX 300
    '85 250sx

  9. #9
    Join Date
    May 2010
    Location
    New York
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    i have an 85 atc 250sx and i put it next 2 a car and pushing it it topped out at 56 but it is very quick up 2 50mph

  10. #10
    dirtbiken's Avatar
    dirtbiken is offline At The Back Of The Pack Arm chair racerFirst time rider
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    Yeah im sayin 60-62, cuz my 225dr will go 55-60 so
    If its to loud then your to old
    I will see you at the finish line

  11. #11
    ailll1's Avatar
    ailll1 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I dont know in mp/h but mine reached 85km/h all stock
    1985 ATC250sx
    1984 ATC200s
    1984 ATC200x
    HONDAS FOR LIFE!!!

  12. #12
    dirtbiken's Avatar
    dirtbiken is offline At The Back Of The Pack Arm chair racerFirst time rider
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    well that around 55-60 mph that about how fast my bike will go, i want to race one of these 250sx's
    If its to loud then your to old
    I will see you at the finish line

  13. #13
    Join Date
    Jan 2010
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    Kokomo indiana
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    Quote Originally Posted by Dynofox View Post
    Should be right around 55mph. I've got an old mag where they tested the dx 225 and 250sx and they were both right around 50-55mph on top.
    if you can scan the article about the dx i would like to see it also. either post it here or email to me. thanks Kirby
    email (kirbdogg24@yahoo.com)

  14. #14
    Join Date
    Dec 2007
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    Quebec,Canada
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    I have the factory Honda speedometer and I top to exactly 100km/h or 60mph......
    22-11-8 tire front and rear

    1986 ATC500X
    1985 ATC250SX
    1985 ATC200X
    1985 ATC250R
    1986 ATC250R
    1984 ATC250R
    1981 ATC70
    1984 ATC70
    1985 ATC70
    Custom built ATC70 / 250R laydwon swap
    1986 ATC250SX FATCAT

  15. #15
    Join Date
    Dec 2009
    Location
    illinois
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    What is the top stock speed of the 1987 200X? I have had mine in 6th gear at top throttle and i would guess about 50-55? Does anyone have a speedometer on their 87?

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