What seatpost diameter does a Factor Ostro VAM (2021 on) use?
The seatpost fitment standard on a Factor Ostro VAM (2021 on), and how to pick the right part.
This frame's fitment
| Frame | Factor Ostro VAM (2021 on) |
|---|---|
| Seatpost diameter | 27.2 mm |
| Diameter | 27.2 mm |
| Typical class | the de facto standard on modern road and gravel frames, and many hardtail and lightweight full-suspension frames |
The Factor Ostro VAM uses an integrated IS42 upper headset, a 27.2 mm class seatpost, a 12x100 front thru-axle and a braze-on front derailleur.
The Ostro uses a proprietary aero post; confirm the exact part. The bottom bracket is a threaded T47 shell, covered on its own page.
The part to buy
Search Amazon for 27.2 mm seatpost for your Factor Ostro VAM (2021 on)affiliate searchFind 27.2 mm seatpost for your Factor Ostro VAM (2021 on) on eBayaffiliate
Related fitment pages
27.2 mm seatpost27.2 mmBottom bracket for Factor Ostro VAM (2021 on)same frame, BB shellHeadset on a Factor Ostro VAM (2021 on)same frame27.2 mm seatpost on a Trek Emonda SLR (2024 on)same standard, another frame
SOURCES: Sheldon Brown, Seatpost Size Database · BikeRadar, Bike seatposts explained: diameters, materials, lengths · Park Tool, Standardized Headset Identification System (SHIS) · BikeRadar, Road bike axle standards: the complete guide