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OneUp Components V3 Dropper Post gets Lighter & Smoother

oneup v3 dropper seatpost on a bike
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OneUp’s new V3 dropper seatpost takes everything that’s great about the V2 and makes it lighter, smoother, and more durable. We even recently added it to our list of the best dropper posts on the market.

Starting with the weight, it’s 60-70g lighter than the V2, thanks mainly to a new hydraulic cartridge that doesn’t need to be inflated. The V2 dropper had a Schrader valve under the saddle that let you adjust air pressure to customize the return speed and force required to compress it.

oneup v3 dropper seatpost shown from side

Now, it’s fixed, which removed all of the hardware necessary to add that valve. They also trimmed and cut here and there to shave as many grams as possible. They say it’s:

  • 238g lighter than Reverb AXS
  • 155g lighter than Fox Transfer
  • up to 60g lighter than the two-position Transfer SL

And you can save another 10g with their ti bolt kit upgrade. Claimed weights, travel options, and sizes are:


Diameter
90mm120mm150mm180mm210mm240mm
30.9325g370g415g460g515g585g
31.6337g385g433g480g538g610g
34.9408g472g535g600g675g765g
27.2304g340g
Total Length295mm350mm415mm480mm545mm610mm

One of OneUp’s claims to fame with their dropper seatpost is the incredibly low stack height thanks to a sunken saddle clamp. This gives them one of the longest drops with the shortest lengths, often letting you run a longer dropper post than you can with competing brands, and the V3’s total length per drop is 10mm shorter than V2.

closeup of a oneup v3 dropper seatpost on a bike

The extended length is in the chart above, and the total compressed stack height that sticks above your frame’s seatpost collar is just 30mm (25mm for 34.9) which is 3mm shorter than before.

Upgraded Internals, too

internals for oneup v3 dropper seatpost

Inside is an all-new cartridge that requires 75% lever force to open, and much less breakaway force to initiate compression. That means quicker, easier drops.

All of the bushings are now self-lubricating IGUS bushings with increased overlap, which makes them smoother and stiffer. Longer travel 180/210/240mm droppers have an extra bushing to support the increased stanchion length.

They also doubled the number of anti-rotation pins to keep the saddle pointing where it should, reducing rotational play without adding friction. Two additional oversized polymer pins help further. Lastly, the seals are all new with an improved collar and SKF wiper seal to keep crud out and lubrication in. These new collars with SKF seal will also be available for V2 droppers soon, and they promise parts for all V2 droppers will remain available for at least five years

Pricing, Warranty & Service Details

The new OneUp V3 dropper retails for $269.99 ($399.99 CAD / €299.99 / £289.99). It’s compatible with their V3 remote (sold separately, or as a $299.99 bundle), all with a 2-year warranty. The Ti Bolt Upgrade kit is $14.99 and also fits the V2 posts.

The post can be easily disassembled with only a 14mm wrench and 2mm/5mm hex wrenches. No custom tools are needed. They recommend cleaning and greasing it after 120 hours, and a full rebuild after 350 hours.

OneUpComponents.com

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Juan Mordico
Juan Mordico
5 months ago

OneUp making the V2 dropper post even better?

Mike
Mike
5 months ago
Reply to  Juan Mordico

Was worried about the sealed cartridge – pumping up the post to higher pressure for faster action was a big thing. However, from the video it looks like it’s still pretty fast, so if it’s simplified ang lighter – fine by me. 🙂

FrankTheTank
FrankTheTank
5 months ago

Well I suppose this substantial upgrade was inevitable. I just bought a V2 two weeks ago.

Mike
Mike
5 months ago
Reply to  FrankTheTank

You still got one of the best seatposts ever made, so the only thing You’re missing out on is 100g lower weight (doesn’t matter in a 14-16kg trail/enduro bike)…

Jason DW
Jason DW
5 months ago

My V2 is not at all smooth. Its not broken and it works its just not that smooth. Hopefully this is a real improvement.

E a
E a
5 months ago

Not particularly light. Specialized command post IRCC in 34.9/160mm is lighter than this in 34.9/150mm.

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