Quick Summary
The PLATT US054 is a black bicycle seatpost made from 6061 aluminum alloy. This version measures 30.8 mm in diameter and 350 mm long, and has a marked minimum insertion line.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Part number | US054, for identifying the PLATT seatpost. |
| Diameter | 30.8 mm. Match this to the exact seatpost diameter required by your bicycle. |
| Length | 350 mm. Check that this length suits your bicycle’s setup. |
| Material and color | 6061 aluminum alloy; black. |
| Quantity | One seatpost. |
| Insertion mark | A minimum insertion line is marked on the post. Follow the mark and applicable installation instructions. |
What to Compare Before Buying
- Diameter: Confirm the exact diameter required by your bicycle. The 30.8 mm version is not a substitute for a different required diameter.
- Length: Check that a 350 mm post suits your bicycle’s fit and adjustment needs.
- Insertion limit: Account for the marked minimum insertion line when checking fit, and follow the bicycle’s applicable installation instructions.
Before You Decide
Confirm the required 30.8 mm diameter, the 350 mm length and the marked insertion limit before selecting this single-seatpost version.









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