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Thread: 400ex axle swap into 250R?

  1. #16
    staceyl200's Avatar
    staceyl200 is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    May 2005
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    I,m going to deviate slightly on this post but will a TRX 450R axle and/or bearing carrier work in an 86 atc 250R because I see quite a few on UK ebay for sale for a few beans ,,and I see not a lot of 250R axles/bearing carriers over here ,, so the 450R,s would be tip top if they fit ,, Has any one got info on this????
    Cheers

    Stacey
    05 TRX 450R HRC (Black)
    86 ATC 250R
    83 ATC 200X

  2. #17
    Join Date
    Oct 2004
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    Maryland
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    I was also wondering if the 450r axel fit on hte 400ex rear end. the 450r axel is an inch wider!
    And that's the rest of the story. ~ Paul Harvey

    "Yes its broken, but does that really surprise you?."
    "What happened? What does it look like happened?!?!"

  3. #18
    Join Date
    Jun 2005
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    Jackson MI
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    I can tell you a little about the 450r & 250r carriers & axles, as I have a 450r torn to shreads In my barn.

    The 450r sprocket hub Is offset way towards the axle carrier. The carrier Is also narrower In total width. This means the the 450r carrier would not stick out of the swinger far enough to put the brake stay on In a 250r swinger. The outside diameter of the carrier's are the same size & the bearings are also the same Inside diameter. This means the axles are the same outside diameter. A 250r axle wont hit the adjuster side of the carrier on the 450r. The 450r axle hits the adjuster side of the 250r carrier. The brake rotor hub would have alot of spline sticking out where the jam nut & collar goes on, but could probly be made to work with a spacer behind the clip collar. The bearings might not hit the correct spot on the 250r axle on the right side of the 450r carrier also. Wow that Is a mouth full. One cool thing about the 450r carrier Is It has double bearings on the chain side. The brake stay's are the same Inside diameter also & the brake hub spline Is the same.

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  4. #19
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    Quote Originally Posted by 200x Basket View Post
    and 400ex's have been around for 14 years. what you are saying make NO sense.
    Im not sure what state you are in, But here in ME the EX came out in 99.

    Im not seeing 14 years there. This thread is gold as I will be buying an extended axle for my R, It is easier to find extended EX axles.
    1987 Honda 200X 90% way through frame up.
    1987 CR500R Motor, Soon to be a 540 ATC motor
    1986 250R frame, For now
    2008 Honda 700XX
    2004 KFX700 Torque monster!
    2011 Can-Am Commander 1000X

    Looking for misc Liquid R parts

  5. #20
    Ironbnder's Avatar
    Ironbnder is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I appretiated this thread also. With Jasons knowledge and helpfull post, this could qualify for World Class Help. I learned some good stuff here.
    FEEDBACK@ http://www.3wheelerworld.com/showthr...-for-Ironbnder

    86 250R
    86 350X
    87 250sx
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    79 atc 70
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    and many multi-wheeled machines

  6. #21
    junit's Avatar
    junit is offline At The Back Of The Pack Arm chair racerFirst time rider
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    will a 400ex axle fit in an 86 350x

  7. #22
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    Quote Originally Posted by junit View Post
    will a 400ex axle fit in an 86 350x
    for the 350x's you can use a 250x/300ex axle but you have to use the 300ex wheel hubs. Just like above get a 300ex axle + hubs and reuse everything else.

    I have a lonestar +4 300ex axle in my 86 350x so i know it works.
    JASON LISKEY

    1985 atc 250r ---- finsh line axle,.fmf exhaust and rictor privateer silencer, prm grab bar.
    2008 KTM 525xc quad ----- HMF exhaust, HRE chromoly stem,
    86 trx 250r --- with after market chromoly frame and everything else done to it
    01 400ex --- with 86 trx 250r motor
    87 250x + 93 300ex both 350x powered
    2 = 86 atc 350x's
    86 atc 250r
    83 atc 185s --- from retired guy not ridden since 87
    Bandito framed 110 with 85 motor and yellow us90 fenders + tank

  8. #23
    Join Date
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    Jason, does the 300ex axle work in the 85 350x as well? It just uses the stock 350x bearings and no special mods? I may have to do some shopping. LOL
    Nicholson 500x (Project)
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  9. #24
    Join Date
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    Quote Originally Posted by Vealmonkey View Post
    Jason, does the 300ex axle work in the 85 350x as well? It just uses the stock 350x bearings and no special mods? I may have to do some shopping. LOL
    yes it'll work in a 85 350x also. Go on ebay anbd get a G-force new they are under $200 for a +4.
    JASON LISKEY

    1985 atc 250r ---- finsh line axle,.fmf exhaust and rictor privateer silencer, prm grab bar.
    2008 KTM 525xc quad ----- HMF exhaust, HRE chromoly stem,
    86 trx 250r --- with after market chromoly frame and everything else done to it
    01 400ex --- with 86 trx 250r motor
    87 250x + 93 300ex both 350x powered
    2 = 86 atc 350x's
    86 atc 250r
    83 atc 185s --- from retired guy not ridden since 87
    Bandito framed 110 with 85 motor and yellow us90 fenders + tank

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