For seatpost diameters not listed as "Direct Insert" please choose from the following shims.

Please note: You will require either a 25.4mm or 27.2mm seatpost with a matched shim for a safe & proper fit.

This range of shims is specifically for use with OD 25.4mm Thudbuster Posts.

Shims For Irregular Sizes From OD 26.0mm to 27.2mm

Choose a Shim to Fit Your Bike
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