Seatpost Shim
27.2mm to 30.8mm


Availability: In stock

SKU: SPA272-308 Category:

Bike seatpost shim adaptor for converting seatposts with a 30.8 mm diameter to a 27.2 mm diameter. These are commonly used to fit narrow seatposts into wider seatpost mounts.

Can be used to fit dropper posts, carbon seatposts or suspension posts which are too narrow to fit.

27.2 mm seat adaptor on bike

Seatpost Shim Adaptor Specifications

  • Brand: Adsports.
  • Material: Alloy.
  • Length: 59 mm.
  • Weight: 26 grams
  • Size: 27.2 – 30.8mm.

If you require any of the other sizes show on back order then delivery will take up to 35 days.

Convertor Sizes Available on Back Order ( 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.

  • 25.4 to 27.2 mm, 27.2 to 33.9 mm, 25.4 to 31.6 mm,  27.2 to 31.8 mm, 22.2 to 25.4 mm, 26.6 to 31.8 mm, 25.4 to 28.6 mm, 27.2 to 31.6 mm, 31.6 to 33.9 mm, 27.2 to 30.4 mm,  30.9 to 31.6 mm, 27.2 to 28.6 mm, 31.8 to 34.9 mm, 27.2 to 30.0 mm.

27.2 to 30.8mm

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