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Please note we have been advised by our couriers to European countries of delays beyond our control & that orders may take a little longer than normal for orders to arrive at European destinations. We are sorry for any inconvenience.


30.9mm to 31.6mm steapost conversion shim. Looking to fit your fancy carbon post or dropper to another bike frame but just found out your frame is too big and your seatpost too small? We've been there too, this is what you need.

  • High precision seatpost shim
      < 90mm in length
    • Increases 30.9mm post to 31.6mm frame
    • Laser cut Full Description
From £3.99



30.9mm to 27.2mm
Lots in stock £3.99
31.6mm to 27.2mm
Lots in stock £3.99
31.6mm to 30.9mm
Lots in stock £5.99

If you've got a few bikes in your stable or are forever swapping parts between bikes then this is a godsend. Perfect for fitting your skinny dropper post to your new fat tubed frame.

Additional Information

Product Code:SPPXSH

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