OneUp Components V3 Dropper Post - 31.6mm, 90-240mm Travel Options

OneUp V3 Dropper Post: 31.6mm

This is the 31.6mm OneUp V3 dropper post, with internal cable routing and a choice of 90, 120, 150, 180, 210 or 240mm travel. Its 30mm compressed stack helps maximize drop within the space your frame allows. Match the 31.6mm diameter first, then choose travel from your measurements. Remote, clamp or brake adapter, and cable/housing are sold separately.

Choose travel from measurements

Check how far the post can enter the seat tube before it meets an obstruction, then measure from the seat clamp to your saddle rails at normal pedaling height. The longest travel number is only useful if the extended saddle height works for you. Allow room for the cable at the bottom and follow both the frame and post insertion requirements.

Travel choices are 90, 120, 150, 180, 210 and 240mm. Included shims let you reduce the chosen travel by 10mm or 20mm. For example, a 180mm post can be set to 170mm or 160mm. Reducing travel does not turn the lower body into a shorter post, so insertion still needs checking.

Use OneUp’s dropper length calculator with your own measurements. If your frame requires 30.9mm, use our 30.9mm OneUp V3 listing instead. These diameters are not interchangeable without an appropriate, frame-approved arrangement.

What you need to finish the setup

The post uses internal cable routing and a sealed hydraulic cartridge. The cartridge does not need air-pressure top-ups. A remote, its clamp or brake adapter, and cable/housing are not included with the post. Choose the OneUp V3 remote and the correct remote clamp or adapter for your cockpit, or verify compatibility with the remote you intend to reuse.

Included with the post

• One V3 dropper post in the selected 31.6mm diameter and travel
• Cable barrel end
• Packet of light suspension grease
• Two sets of 10mm travel-reduction shims

Specs and maintenance

• Diameter: 31.6mm
• Routing: internal, cable actuated
• Travel options: 90 / 120 / 150 / 180 / 210 / 240mm
• Compressed stack height: 30mm
• OneUp service intervals: 120 hours for clean and grease; 350 hours for full rebuild

A sealed cartridge still needs a clean, lubricated post around it. Keep the wiper clean and follow OneUp’s service instructions. Our OneUp V3 overview explains the cartridge, bushing and seal changes from V2. Use the current manufacturer dimensions when making your fit decision.

Original V3 comparison graphics

The graphics below show the original V3 launch specifications and contemporary comparisons. For current dimensions and fit, use OneUp’s linked length calculator.