USE Seatpost Shim  £6.99

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IDPart CodeStockOptionPriceBasket
18448ssx272In Stock25.0 - 27.2
21440ssx292In Stock27.2 - 29.2
21439ssx294In Stock27.2 - 29.4
18452ssx309In Stock27.2 - 30.9
18457ssx316Ships In 2 - 3 days27.2 - 31.6
18460ssx324In Stock27.2 - 32.4
Postage to United Kingdom on this item is £2.99
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The USE shim system allows you to fit a post into virtually any frame size. USE shims are made to 100mm length and are longer than other shims on the market. This supports the seatpost inside the frame. All shims are designed with a "top lip" to stop shim sliding into the frame.

  • Rolled Aluminum shim - the very thinnest shims are rolled from sheet metal - such as the 27.2 - 28.0 shim typically used for Colnago carbon frames.
  • Machined Aluminum shim - machined to very high tolerances from 6082 T6 Aluminum and then black anodised to protect from corrosion.
  • Machined Plastic shim - larger size shims are machined to very high tolerances from "filled" engineering thermoplastic UPVC. This keeps the weight down, as the shims get thicker.


    Shim Size mm Material Weight
    25.0 - 27.2 Machined Alloy 21g
    27.2 - 28.0 Rolled Alloy 7g
    27.2 - 30.9 Thermoplastic 22g
    27.2 - 31.6 Thermoplastic 26g
    27.2 - 32.4 Thermoplastic 31g


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