Diameter31.6 mm
Model code and generation identify the exact component. Similar names do not mean identical interfaces or specifications. For upgrades and replacements, version and model year matter; the newest version may not fit your bike.
Closed: Tuesday 27 October through Sunday 1 November. Please note: the workshop is from now on also closed on Thursdays.
Back to my build
Cords Cycles / Omnium / The component dossier
Omnium Dropper Post
Estimate incl. VAT
€233
Aluminium (6061-T6) 31.6 mm dropper post with 120 mm of stepless adjustment. The lever under the front of the saddle lets the post rise on its own or drop under your weight; releasing it locks it again. Ideal for sharing one Omnium with a partner or teenager of a different height.
01 / 05
Atelier selection
Under the microscope
- Diameter
- 31.6 mm
- Travel
- 120 mm
- Length
- 381 mm
- Offset
- 15 mm
- Weight
- 640 g
- Material
- Alloy 6061-T6
Not every detail of this exact version has been confirmed by the manufacturer. Thomas checks the model and fit before assembly.
Will it fit your build?
Possible frames in the configurator
The configurator estimate is not a quotation. Thomas confirms price, specification and availability.
Source checked: 2026-11-03
In this dossier
Everything you need to know about the Omnium Dropper Post
How the component works, which specifications matter and what to watch for when choosing. From the basics to the details real bike nerds care about.
Technical source: Shimano technische handleidingenManufacturer information
Travel120 mm
Model code and generation identify the exact component. Similar names do not mean identical interfaces or specifications. For upgrades and replacements, version and model year matter; the newest version may not fit your bike.
Length381 mm
Dimensions determine practical fit for luggage, accessories or locks. For commuting and transport, measure the actual load and available space; sporting riders should avoid unnecessary bulk. Check clearance while steering and pedalling too.
Offset15 mm
Model code and generation identify the exact component. Similar names do not mean identical interfaces or specifications. For upgrades and replacements, version and model year matter; the newest version may not fit your bike.
Weight640 g
Lower weight helps on climbs and repeated accelerations. For flat rides, commuting and carrying loads, comfort, durability and aerodynamics often matter more than a few grams. Frame, wheelset and complete-bike weights are not directly comparable.
MaterialAlloy 6061-T6
Material affects weight, stiffness, maintenance and use, but construction matters just as much. Do not choose on a carbon or metal label alone. Racers prioritise weight and response; everyday riders durability, protection and upkeep.
Frequently asked questions
The questions customers ask in the atelier, with answers you can check against the official source.
What is the Omnium Dropper Post?
Aluminium (6061-T6) 31.6 mm dropper post with 120 mm of stepless adjustment. The lever under the front of the saddle lets the post rise on its own or drop under your weight; releasing it locks it again. Ideal for sharing one Omnium with a partner or teenager of a different height.
Manufacturer informationWhat does material mean on the Omnium Dropper Post?
Material: Alloy 6061-T6. Material affects weight, stiffness, maintenance and use, but construction matters just as much. Do not choose on a carbon or metal label alone. Racers prioritise weight and response; everyday riders durability, protection and upkeep.
Basso Diamante geometrie en constructieWhat does diameter mean on the Omnium Dropper Post?
Diameter: 31.6 mm. Model code and generation identify the exact component. Similar names do not mean identical interfaces or specifications. For upgrades and replacements, version and model year matter; the newest version may not fit your bike.
Shimano technische handleidingenWhat should I check before fitting the Omnium Dropper Post?
Check the exact version, mounting points and fitting instructions. Thomas checks whether the component fits your bike; an item in the overview does not automatically suit every build.
Manufacturer information