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Thread: quik question on 250R front caliper piston

  1. #1
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    quik question on 250R front caliper piston

    wondering if the caps on the end of the piston's (the end facing the brake pads) have to be on there? i have lost one is all..
    thanks for reading
    85 250R
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    80 110

  2. #2
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    Sep 2008
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    those 2 round caps that i think are glued on to the end of the pistons, anyone??
    85 250R
    85 Tri-Z
    80 110

  3. #3
    gravelyman's Avatar
    gravelyman is offline At The Back Of The Pack Arm chair racerFirst time rider
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    no they screw on

  4. #4
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    mine were glued on, also there is no thread to screw them
    85 250R
    85 Tri-Z
    80 110

  5. #5
    Join Date
    Jun 2003
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    englishtown NJ
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    about half of mine have them, all the old non-rebuilt(ever) ones don't. I don't use the brakes enough for it to be an issue.

  6. #6
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    I think they are a composite material that is meant to be a buffer between the piston and the pad...

    Many of them are missing, broken or gone altogether. I'm no engineer and I can't say what there real purpose was, but I'll assume that they were necessary in someones eyes.

    But, brakes seem to work just fine without them and I don't feel or hear any squeeling, wear patterns or strange noises without them....

    Anyone have a definitive information??

    Crazy, stupid or off the wall thoughts are always welcome
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  7. #7
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    I dont have them on any of my stuff either and I didn't notice any issues. I would say that they were there to help keep the pad from sticking to the pistons from rust, but the pistons are already coated in like a plastic of some type so theres no metal to metal contact. Beats me.

  8. #8
    Join Date
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    cool, thanks for the reply's
    85 250R
    85 Tri-Z
    80 110

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