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Thread: Exhaust gasket dimensions

  1. #1
    Join Date
    Jul 2018
    Location
    TN
    --
    1,065

    Exhaust gasket dimensions

    Does anyone know what a 250ES exhaust gasket measures on the ID?

    I have a 300EX on hand and it measures 1.365. It might work but is a little loose for my liking. Looking for a donut ring that's about 1.25 ID.
    For all I know the Honda 200 gasket may be the right one but I used the last one I had and haven't ordered more.

    If you have one laying around, please measure it and let me know. Thank you!!
    Last edited by Gabriel; 06-10-2019 at 06:06 PM.
    I was born and raised on Venus & I may be here a while.....

  2. #2
    Join Date
    Aug 2016
    Location
    East of Worcester ma
    --
    1,328
    86/87 200x- is this: Click image for larger version. 

Name:	E4CFB1CD-04CD-4BCA-85FC-843885AB8FAA.jpeg 
Views:	6 
Size:	2.01 MB 
ID:	258843 not sure it’ll help but u can compare part #’s
    If it the gasket your looking for/ just remember the soft copper squishes so the one you have will most likely be fine.
    Shep

  3. #3
    Join Date
    Apr 2012
    Location
    USA
    --
    4,114
    If you don't mind china made for this part, I can get them pretty cheap. I could grab a hand full of them in my next order if you want. Ironically, this company does somewhat good giving dimentions and such, everything is in mm though, 32mm = 1.25984in. They have smaller that's under 1.25in too, and even smaller yet. I suspect the best measurement you'd need is the exhaust flange that you're trying to seal, so the ID's don't interfere with the exhaust flow.

    32mm ID
    http://www.motopartsdealer.com/exhau...le-p-1614.html

    30mm ID
    http://www.motopartsdealer.com/exhau...le-p-1612.html

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