Take up to 115g out of your Factor ONE with one clean upgrade.
The original Factor ONE seatpost has a published weight of 246g. Darimo’s Factor-specific carbon replacement weighs just 131g in a 350mm length.
That is a serious weight saving without replacing your wheels, groupset or cockpit.
Fix the ONE’s Weight Penalty
The Factor ONE is built around outright aerodynamic performance, but its original seatpost is surprisingly heavy.
Darimo replaces it with a handmade carbon post shaped specifically for the ONE. You keep the bike’s distinctive aero integration while removing up to 115g from the build.
Made for the Factor ONE
This is not a universal post or an adapted round seatpost. It is produced specifically for the proprietary profile of the current Factor ONE.
The straight, 0mm-offset design suits the ONE’s modern, forward-focused race position.
Hand-Laminated by Darimo
Each post is handmade using a load-specific carbon layup. Material is concentrated where strength is required and removed where it is not, delivering an exceptionally low weight without using a generic constant wall thickness.
Choose from UD, 3K or Forged Carbon, with matte or shiny finish options listed by Darimo.
Specifications
- Compatibility: Current Factor ONE
- Offset: 0mm
- Claimed weight: 131g at 350mm
- Original post benchmark: 246g
- Potential saving: Up to 115g
- Carbon options: UD, 3K or Forged Carbon
- Surface finish: Matte or shiny
- Saddle rails: Standard round and 7x9mm carbon rails
- Manufacturing: Handmade in Spain
The 131g and 246g figures are published weight benchmarks supplied by Darimo. Actual weight may vary with configuration.
Frequently Asked Questions
How much weight will it save?
Darimo claims 131g for its 350mm Factor ONE seatpost, compared with 246g for the original. That is a potential saving of 115g.
Is it made specifically for the Factor ONE?
Yes. The carbon profile is produced specifically for the current Factor ONE. It is not compatible with the Factor OSTRO VAM.
Does it have any setback?
No. This is the straight Factor ONE seatpost with 0mm offset.
Can I use a carbon-railed saddle?
Yes. The clamp accommodates standard round rails and 7x9mm oval carbon rails.
Which carbon finishes are available?
Darimo lists UD, 3K and Forged Carbon, with matte or shiny finish options. Available combinations are shown in the product options above.
Make Your Factor ONE Even Better
Remove up to 115g from one of the most advanced aero bikes available. Choose your configuration above and order your Darimo Factor ONE seatpost now.