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This bike seatpost shim adaptor increases the diameter of your seatpost mount from 30.9 mm to 27.2 mm. This allows for seatposts with smaller diameter mounting tubes to fit your bike.
Perfect for converting your standard seatpost to a suspension post or dropper post which is too narrow.
If you require any of the other sizes show on back order then delivery will take up to 35 days.
We have an extended range available which can be ordered in. If you are after any of the below size adaptor shims then please either let us know. Alternatively you can place an order via our other listing. We will then send to you as soon as the size your are after arrives into stock.