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Info YSS Shock for ZXR250

Discussion in 'Kawasaki 250cc In-line 4's' started by maelstrom, Aug 21, 2021.

  1. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Here you go
    YSS.jpg

    I assume you could order them in Aus, but if not try Tyga in Thailand.
     

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    Last edited: Aug 21, 2021
  2. Big Balls

    Big Balls Member Premium Member

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    Thanks for that. Will keep you posted.
     
  3. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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  4. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    The Balius shock will probably fit the ZXR as well. Be nice if they published the stroke.
    Here is the YSS Spring Code guide.
    So the Balius is fitted with an 85Nm spring and the ZXR with 80Nm.
     

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    Last edited: Aug 21, 2021
  5. Frankster

    Frankster "Play stupid games, win stupid prizes" Staff Member Premium Member Ride and Events Crew

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    Is the length of the YSS Balius shock eye to eye or end to end?

    upload_2021-8-21_16-13-11.png
     
  6. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    eye to eye
     
  7. Big Balls

    Big Balls Member Premium Member

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    Thanks for that have emailed the NZ agent to give me prices etc etc. Keep you posted.
     
  8. Big Balls

    Big Balls Member Premium Member

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    Got up early today removed the shock and disassembled it. All the measurement are the same, length, mounting points, etc.
    The free length of the spring is 172mm. Top dia 70mm, Bottom dia 75mm. Pushed the shock right down and let it come up to the top of the stroke, 55mm travel.
    The shaft is badly corroded and when the piston returns up there is aeration sound in the shock. Waiting for the YSS agent to reply to my email regarding prices etc. Enjoy your day everyone.

    IMG_0327.JPG IMG_0331.JPG IMG_0321.JPG IMG_0328.JPG IMG_0329.JPG IMG_0330.JPG
     
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  9. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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  10. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Looks to be a C model
     
  11. Big Balls

    Big Balls Member Premium Member

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  12. Big Balls

    Big Balls Member Premium Member

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    well I finally found a shock, just had to skim some metal off the top sleeve mount and some thin spacers on the bottom clevis mount. Found the original shock spring too soft, have gone for a 115Nm spring. Have fitted it and there is no way I can bottom out this one like the original. Have heaps of preload to play with, unlike only 7 steps with the old. I can have a lot more OR less static sag. Price was $350 delivered to my door. Ordered some Dunlop Alpha 14s. Doing the shims now. Where's the BEST place to get shims. Thanks. Happy riding everyone. IMG_0378.JPG IMG_0380.JPG IMG_0381.JPG IMG_0379.JPG
     
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  13. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Be careful with the shims. There seems to be some inconsistency in whether ZXR's use 7.48mm or 7.98mm shims. The shim has to fit snug in the retainer and have no horizontal movement. Confirm what you have before ordering.

    As for suppliers, in AU we have http://www.precisionshims.com.au/ and they are pretty comprehensive in what you can order online.

    Nice work getting the Alpha 14's
     

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