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OneUp Components Dropper V2 Seatpost

Average User Rating: (Excellent) Vital Rating: (Outstanding)
OneUp Components Dropper V2 Seatpost
 OneUp Components Dropper V2 Seatpost  OneUp Components Dropper V2 Seatpost  OneUp Components Dropper V2 Seatpost  OneUp Components Dropper V2 Seatpost
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Tested: 210mm Dropper Post v2 from OneUp Components

Short stack height, adjustable travel, good reliability - there's a lot to like about OneUp's updated dropper.

Rating: Vital Review
Tested: 210mm Dropper Post v2 from OneUp Components

We’ve already spent a lot of time on OneUp’s droppers and we know that they deliver awesome performance at a good price point. But these days, more is always better, so to create v2 OneUp went back to the drawing board and added this whopping long 210mm version to their arsenal of slippery sliders. We've had one out on the trails to test, check out the details and our video review below to learn more.



  • Very low overall stack height
  • Huge range of sizes available for all three major seat tube diameters
  • Adjustable travel
  • Great reliability
  • Replaceable cartridge design
  • Competitive pricing
  • The design of the remote lever can make it hard to reach
  • The action of the remote feels a bit rough if activated while seated on the post

OneUp Components Dropper v2 Highlights

  • Lengths:120mm, 150mm, 180mm, 210mm
  • 10mm travel adjust shims
  • Cable actuation
  • User replaceable cartridge ($60 USD)
  • Diameter: 30.9mm, 31.6mm, or 34.9mm
  • Weight: 698 grams (210mm,31.6mm, including remote and cable, verified)
  • Warranty: 2 years
  • MSRP: $258 USD including remote

Video Review

The OneUp 210mm dropper post was reviewed in Vital MTB's Gear Show, jump ahead to 6:24 to view it directly (or just sit back and enjoy the whole show!):


What’s rad about OneUp’s droppers? First of all, they’ve proven themselves to be reliable, which is easily the biggest bone of contention many riders have with this particular piece of equipment. Dodgy droppers, no thanks! We’ve collectively paid our dues there. Now OneUp’s droppers also come in a variety of different sizes and lengths, and because they offer possibly the lowest stack height and total post length of any dropper out there, chances are you can squeeze more dropper travel out of a OneUp dropper than anything else.

OneUp 210mm dropper (top) compared to a 170mm FOX Transfer.

Not only does OneUp make the v2 dropper in a bunch of sizes – you can also easily adjust the travel of your dropper in 10mm increments. The v1 version used a plastic shim that could be cut to a specific length to achieve this, on the v2 OneUp has moved to a system based on a set of small little brass spacers instead. The 210mm version tested here can be set to 200 or 190 by just unscrewing the collar and sliding in a couple of the aforementioned spacers. As for the remote, it comes with a separate clamp, or it can be attached directly to your brake levers if you run SRAM or Shimano.


On the trail, the action of the OneUp dropper is smooth, quick, and fairly precise. A distinct clunk lets you know your post has reached full extension, but it doesn’t shoot up like a rocket either. The remote is fairly easy to modulate, squeeze it to less than full travel and you can easily fine tune your saddle height. Our only gripe with the remote is that it is positioned a little bit awkwardly. It’s meant to mimic the placement of the smaller shifter lever (from back in the days when we all had front derailleurs, you’ve probably seen one in a museum somewhere). It sits in the right place which is all well and good, until you press it. It then ends up traveling a bit too much forward, leaving you to stretch your thumb to get all of it. Other than that, thanks to the short seat tube of my bike and my long legs, I was able to run the full 210 mm with room to spare. I did actually find it a bit too much, my sweetspot is probably more around 180-190, but that’s what’s so rad about this one – you can shim your way to your own preferred number. And if at some point your dropper should fail, the internal cartridge is user replaceable (for just $60 if outside warranty). All that for just $250 USD, including the remote, makes the OneUp dropper one of our top choices today. We have yet to update our big dropper post Face Off feature to include the OneUp, but when we do, it will clearly challenge for the podium.

For more information, head on over to

About The Reviewer

Johan Hjord - Age: 46 // Years Riding MTB: 14 // Weight: 190-pounds (87-kg) // Height: 6'0" (1.84m)

Johan loves bikes, which strangely doesn’t make him any better at riding them. After many years spent practicing falling off cliffs with his snowboard, he took up mountain biking in 2005. Ever since, he’s mostly been riding bikes with too much suspension travel to cover up his many flaws as a rider. His 200-pound body weight coupled with unique skill for poor line choice and clumsy landings make him an expert on durability - if parts survive Johan, they’re pretty much okay for anybody. Johan rides flat pedals with a riding style that he describes as "none" (when in actuality he rips!). Having found most trail features to be not to his liking, Johan uses much of his spare time building his own. Johan’s other accomplishments include surviving this far and helping keep the Vital Media Machine’s stoke dial firmly on 11.

Photos and video by Johan Hjord

It Blew the Competition out of the Water, We are Still Waiting for a True Rival

Rating: Featured Member Review
The Good:

- Price
- Dimensions (Low Stack and Overall Length)
- Travel Adjustment
- Servicability
- Reliability

The Bad:

- Not as Smooth as High End Offerings
- Requires Fresh Grease Every Few Months
- Developed Lateral Play

Overall Review:

I purchased a 180mm OneUp Components V2 Dropper to replace my 150mm KS Lev Integra after frustration with its numerous issues that required $130 in parts and labor to repair. I'm 5' 9" and ride a size medium Niner Jet 9 RDO and I'm able to run the post at 180mm with a centimeter or two of wiggle room to lower the post for shorter riders. That said, due to the quite slack actual seat tube angle of the post, I decided to run the post at 170mm for increased bushing overlap.

Setting up the post is a doddle, and I love the decision to have the cable clamped at the remote instead of at the post. 6 months into ownership, and there is minimal rotational play, the post operates similar to how it did on day 1. I have recently found a small amount of forward-backward play, which was cause for concern as it could lead to internal wear. I contacted OneUp and they responded promptly (over the weekend!) and sent me oversized pins at no charge. I'm about to install them, and I'll report back on the results.

Despite the issue, OneUp's competitors haven't quite caught up. The latest posts from BikeYoke, Fox, and RockShox are all twice as expensive, have a taller stack, and in the case of Fox and BikeYoke, they somehow neglected to shorten their 28mm+ actuator length, whereas OneUp's actuator is at 15mm, saving precious space for the internal cable.

Great so far

The Good:

Lowest stack height
One of the lighter options
Cable clamps at lever
User serviceable and easily replaceable cartridge
Feels solid
Seat clamp head

The Bad:

Not as smooth post action as other posts

Overall Review:

So far so good. Only 3x rides in but with the 180mm drop at something like ~530grams I'm stoked on having a full 7+ inch drop without the added weight.

Definitely doesn't feel quite as smooth or rock solid as the KS LEV Integra, but works as advertised and it's user-serviceable as one of the cheapest options at the lowest weight.

Very happy with my choice.


Product OneUp Components Dropper V2 Seatpost
Riding Type Enduro / All-Mountain, Freeride / Bike Park, Trail
Seatpost Type Dropper
Interface Railed
Remote Adjustable Yes
Diameter 30.9, 31.6, and 34.9
Travel 120mm, 150mm, 180mm, and 210mm
*All can be shimmed down in travel by 10 or 20mm
Length 360-540mm
Tilt Adjustable
Materials Alloy
Colors Black
  • 1 lb 8.2 oz (686 g)
  • 0 lb 15.3 oz (435 g)
  • 1 lb 1.6 oz (500 g)
  • 1 lb 3.2 oz (545 g)
  • 1 lb 7.3 oz (660 g)
  • 1 lb 9 oz (710 g)
  • Travel adjust shims allow custom tuning to dial in your perfect length
  • Cable actuated for easy installation and a no bleed remote
  • Ergonomic remote paddle (sold separately)
  • Internal routing only
  • Reliable sealed cartridge internals
  • User-replaceable cartridge (sold separately)
  • Easy to service at home
  • Add-on remote: $49
  • User-replaceable cartridge: $60
  • 2-year warranty

    Updates from V1 seatpost:
    - Shortest total length of any dropper
    - Shortest stack height of any dropper
    - New upper DU Bushing in the upper collar
    - Increased bushing overlap and durability
    - 100-210mm post lengths in 10mm increments.
    - 20g lighter
  • Price
    • $199
    • $209
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