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Thread: '85 Honda 250SX VS. '85 Honda 250ES OEM Mufflers... Interchangable ??

  1. #1
    Maico's Avatar
    Maico is offline Just Too Addicted Arm chair racerJust too addicted
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    '85 Honda 250SX VS. '85 Honda 250ES OEM Mufflers... Interchangable ??

    Does anyone know if the OEM muffler from a '85 Honda 250SX is the same or interchanges with the OEM muffler from the '85 Honda 250ES ?? I know they look awfully close to one another. Part numbers are off by 1 letter and 1 single digit.

    '85 250SX #18310-HA6-681
    '85 250ES #18310-HA0-682
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    Queef Chief's Avatar
    Queef Chief is offline At The Back Of The Pack Arm chair racerFirst time rider
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    I know this doesn't answer your question, but I put an '85 SX head pipe on an 85 ES and it fit perfectly. I would bet the muffler would fit as well.


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  3. #3
    Maico's Avatar
    Maico is offline Just Too Addicted Arm chair racerJust too addicted
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    I'm thinking the same thing. If the exit angle of the headpipes match...I'd be willing to bet the mufflers will swap too. The reason for this question is that my OEM SX muffler has been repaired in the past from previous owners and needs repairing again. There's a few aftermarket silencers out there but they only list them for the ES.
    "You should never smoke in pajamas..
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  4. #4
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    I believe the sx has a shorter frame just from memory... so I woud guess its different....
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  5. #5
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    Very good question. I don't have an answer either but I can speak on the aftermarket mufflers. I installed on on my big red right before trikefest and it fits great. Decibels are near stock.
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  6. #6
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    more of an I don't know than an answer, but i think the lower mount is in a different place. The reason i think this is that i changed out a big red to a chimp aftermarket exhaust and it only used the upper and rear mount. It was so nice that i did the same for a friends sx. same exact kimpex muffler. same top mount and rear mount. bottom mount did not exist. 2 outta 3 aint bad.
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  7. #7
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    They are different, no go without a welder.
    Please help those who cannot help themselves.

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    Maico's Avatar
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    Quote Originally Posted by atc007 View Post
    They are different, no go without a welder.
    A mod to the inlet pipe is probably in order. That...I can handle. I'll pick one up and see how it goes.

    Thanks for all the info guys.
    "You should never smoke in pajamas..
    You might start a fire and burn your face..
    Maybe you should return to Manaugua..
    You could go un-noticed in such a place"

    FZ

    Ass,gas or grass....nobody rides for free!

    Ride free,Brotha. See you in Heaven.

  9. #9
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    Post back what you find. My old brain can't remember the exact differences,or which one I was swapping. SX to ES or vice versa. Just know they didn't work without work.
    Please help those who cannot help themselves.

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  10. #10
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    I don't mean to hijack a thread
    if so call me out
    same topic different part
    I have a 250sx and located a 250es big red parts bike
    will the airbox from the es fit the sx

  11. #11
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    no on the airbox, muffler works with some modding
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  12. #12
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    Quote Originally Posted by mollie8000 View Post
    no on the airbox, muffler works with some modding
    thank you!

  13. #13
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    Quote Originally Posted by atc007 View Post
    Post back what you find. My old brain can't remember the exact differences,or which one I was swapping. SX to ES or vice versa. Just know they didn't work without work.
    My old brain does!! Hey Bill, it's been a while!!

    Yes it will interchange..However the one machine has a flange on the frame to connect and support the pipe, the other doesn't. That bit my old brain doesn't remember..Same condition as Bill.

    Anyway you install the muffler and if needed cut the flange using a grinder to make sure it clear and doesn't contact the frame. The back securing bolt and front pipe geometry are the same on both models and it'll directly fit once this small modification is done!
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  14. #14
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    Quote Originally Posted by dougspcs View Post
    My old brain does!! Hey Bill, it's been a while!!

    Yes it will interchange..However the one machine has a flange on the frame to connect and support the pipe, the other doesn't. That bit my old brain doesn't remember..Same condition as Bill.

    Anyway you install the muffler and if needed cut the flange using a grinder to make sure it clear and doesn't contact the frame. The back securing bolt and front pipe geometry are the same on both models and it'll directly fit once this small modification is done!
    Good to see you pop in here after so long, Doug

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    Yea, no kidding!! Glad to see you stop in Doug!


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