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Thread: 250es differential swap

  1. #1
    Join Date
    Dec 2002
    Location
    SW Alabama
    --
    763

    250es differential swap

    I have a 85 250es with a bad diff housing. Will just the diff housing work from a 86 trx250? I know the other swinger parts are different but just the housings look the same.
    Trikes: Cagiva 200, 85? Tiger 250,(2)84 200x's , (3)86 200x's, 87 200x, (5)85 350x's, (2)86 350x's, (2)85 250r's, 86 Tecate, (3) 85 250sx's Restoring: 83 200x, 86 250sx. Too many utility trikes to list.

  2. #2
    Join Date
    Jul 2009
    Location
    South Florida
    --
    6,727
    The housing is different on the 85 model , 86/87 big red and 86+Trx250 are the same .
    The 85 model had a different seal lip area .
    All that being said I have swapped them over , just a little grinding and massaging in
    Last edited by shortline10; 07-29-2019 at 06:09 PM.
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  3. #3
    Join Date
    Jan 2012
    Location
    Austin, Massachusetts
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    1,591
    and who like grinding and massaging more than you????
    Wubba Lubba Dub Dub!!!!!

    TRIKES:
    86 250r
    85 250sx
    86 250sx
    84 Yamaha 225DX - Bruins Trike
    85 Yama 225DX - The Rental!
    150cc Piranha powered 70
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    82 70
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    88 Yamaha BW 80
    84 z50

  4. #4
    Join Date
    Apr 2012
    Location
    USA
    --
    4,114
    I have an 85 ATC250SX diff housing. I know as a whole unit they interchange, but I'm unsure if the 250es gear set will fit the 250sx housing. I have the SX gear set too, the center hub for the ring gear needs to be swapped out with a good one as the splines that interfaces with the axle are worn out.
    Last edited by ps2fixer; 07-30-2019 at 10:34 PM.

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