OneUp Components V3 Dropper Post - 30.9mm, 90-240mm Travel Options

OneUp V3 Dropper Post: 30.9mm

This OneUp V3 dropper post has a 30.9mm diameter and uses internal cable routing. Choose 90, 120, 150, 180, 210 or 240mm of travel to suit your frame and saddle height. The post has a low 30mm compressed stack to help fit more drop into the space available. Remote, clamp or brake adapter, and cable/housing are sold separately.

Choose travel from measurements

Measure your normal pedaling height from the top of the seat clamp to the saddle rails, then check the usable insertion depth inside the frame. A bend, bottle boss or other obstruction can limit insertion before the post is fully lowered. Leave the cable clearance specified by OneUp, and respect both frame and post minimum-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 31.6mm, use our 31.6mm 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 30.9mm diameter and travel
• Cable barrel end
• Packet of light suspension grease
• Two sets of 10mm travel-reduction shims

Specs and maintenance

• Diameter: 30.9mm
• 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.