Quick Summary
The UPANBIKE 450 mm bike seat post is an extra long replacement seatpost with a micro adjust clamp. It is described as a 30.9 mm fit and is intended to raise saddle height where that size is required.
The stated length is 17.7 inch, which is 450 mm. The clamp is adjustable for saddle tilt angle, so the saddle angle can be set to suit the build and setup of the bike.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | UPANBIKE. |
| Product type | Bike seat post. |
| Length | 17.7 inch (450 mm), an extra long format for bikes that need more seatpost height. |
| Fit size | 30.9 mm seatpost fit, so the frame opening must match this size. |
| Clamp | Micro adjust clamp with adjustable saddle tilt angle. |
| Material | Aluminium alloy. |
What to Compare Before Buying
- Seatpost diameter: The stated fit size is 30.9 mm. Match this against the frame seatpost hole before choosing an offer.
- Length: This seatpost is 450 mm long. Compare that with the height adjustment you need for your riding position.
- Saddle angle adjustment: The clamp allows the saddle tilt angle to be set. Check whether that style of clamp suits your saddle setup.
- Replacement use: This is a replacement seatpost, so confirm it is the right size and style for the bike already in use.
Compatibility, Size and Fit
This seatpost is for bikes that need a 30.9 mm seatpost size. The stated fit is important, because the post must match the frame seatpost hole.
The extra long 450 mm length is relevant for taller riders or for bikes where more height adjustment is needed. Measure the size required on the bike before choosing an offer, and check that the saddle clamp style works with the saddle you plan to fit.
Before You Decide
Confirm the 30.9 mm fit size against your frame opening before choosing an offer. Check whether the 450 mm length suits the height you need, and make sure the micro adjust clamp works with your saddle setup. This is a replacement seatpost, so matching the size and configuration matters most.









