Planet X Bikes
Jobsworth Alloy Seatpost Shim+ Add to Compare ✔ In Comparison
30.9mm to 31.6mm seatpost conversion shim. Looking to fit your fancy carbon post or dropper to another bike frame but just found out your frame is too big and your seatpost too small? We've been there too, this is what you need.
- High precision seatpost shim
- 90mm in length
- Increases 30.9mm post to 31.6mm frame
- Laser cut
If you've got a few bikes in your stable or are forever swapping parts between bikes then this is a godsend. Perfect for fitting your skinny post to your new fat tubed frame.