Bike seatpost adaptors available in various sizes on back order. These seatpost shim adaptors are used when the post size of the seatpost is too small to fit into your bikes seatpost mount. They often used for adapting the size of dropper posts and suspension posts to fit on bikes with larger mounting holes. Bike Seatpost Adaptors Specifications Brand: Adsports Material: Alloy. Length: 40 - 60 mm. Weight: 25.58 grams. Convertor Sizes Available on Back Order ( up to 35 days). 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. 31.6 to 33.9 mm. 30.9 to 31.6 mm. 31.8 to 34.9 mm. 27.2 to 30.0 mm.
