Brand-X Seatpost Shim
Features
- Length: 80mm
- Option: 31.6mm x 30.9mm, 30.9mm x 27.2mm, 31.6mm x 27.2mm
- Precision machined alloy Seatpost shim
The Brand-X Seatpost Shim is a precision machined alloy seatpost shim allowing you to convert 31.6 and 30.9 seat tubes to smaller diameters.





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