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OneUp ComponentsV2 Dropper Post

$199.00 - $209.00

Item # OUC000X

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  • Black, 30.9x420mm/150mm Travel ($199.00)
  • Black, 30.9x480mm/180mm Travel ($209.00)
  • Black, 30.9x540mm/210mm Travel ($209.00)
  • Black, 31.6x360mm/120mm Travel ($199.00)
  • Black, 31.6x480mm/180mm Travel ($209.00)
  • Black, 31.6x540mm/210mm Travel ($209.00)
  • Black, 34.9/120mm Travel ($199.00)
  • Black, 34.9/150mm Travel ($199.00)
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Item # OUC000X

Dropper Post V2

When we were a kid, we thought being called "short stack" was an insult to our not-so-lofty stature. It turns out, our heads just weren't in the right game. OneUp Components takes short stack to the max with its Dropper Post - V2, measuring in with the shortest stack height available, and shortest total length of any available dropper currently on the market. Much like the first iteration, the V2 features cable-actuated, infinitely adjustable drop, and a stack height so low that you can easily size up your dropper and enjoy more clearance when its time to buzz the back wheel on steep, aggressive descents.

Not only is it the absolute shortest dropper post on the market, but OneUp offers a unique, travel-adjust shim system with two 10-millimeter shims that enable you to trims down your post to your personalized needs by up to 20-millimeters, so you don't have to size down in dropper length if you're between sizes. This means you can achieve that 140 millimeters of drop with the 150-millimeter option or achieve 160 millimeters of drop with the 180-millimeter option by OneUp, making it a truly personalized dropper, seeing your physiology doesn't usually conform to every number on the market.

For the dropper's operation, the OneUp Dropper Post uses a reliable cable-actuated that doesn't require bleeding to deliver smooth drops and speedy returns — though do note that the lever isn't included. Since the cable clamps at the lever, trimming it down for cable routing is a breeze. And since it's not a hydraulic dropper like some of the competition, it won't slow down or stick in those colder temperatures regularly experienced at higher elevations.

  • OneUp's dropper post keeps things short in stack, long in drop
  • Two 10-millimeter travel adjust dims lets you fine-tune drop
  • Shortest stack height and total length allows you to size up
  • Reliable sealed cartridge internals handle the rigors of the trail
  • Simple, cable-actuated remote doesn't require bleeding
  • OneUp Dropper Lever remote switch is sold separately

Tech Specs
30.9mm, 31.6mm
360mm, 420mm, 480mm, 540mm
120mm, 150mm, 180mm, 210mm
infinitely adjustable
Recommended Use
cross-country, enduro, trail
Manufacturer Warranty
2 years

Actual Weight

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead



Black, 30.9x420mm/150mm Travel
Black, 30.9x480mm/180mm Travel
Black, 30.9x540mm/210mm Travel
Black, 31.6x360mm/120mm Travel
Black, 31.6x480mm/180mm Travel
Black, 31.6x540mm/210mm Travel
Black, 34.9/120mm Travel
Black, 34.9/150mm Travel
Post only, lever not included

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[30.9, 120mm] 435g, [30.9, 150mm] 480g, [30.9, 180mm] 525g, [30.9, 210mm] 570g, [31.6, 120mm] 450g, [31.6, 150mm] 500g, [31.6, 180mm] 545g, [31.6, 210mm] 590g

View more Dropper Seatposts

    What do you think about this product?


    >Rating: 4

    Good for taller people

    I've put it through the wringer
    True to size
    Size Bought
    6` 3"
    190 lbs

    I installed a 180 mm on a Trek Full Stache 8 frame size large. The base will not fit all the way in the frame for me, but that is not the post's fault. It does go in far enough for me so that is fine. I pumped up the post to the recommended pressure settings. The only complaint that I have is that you must remove the seat in order to add more air and that is just a pain the butt. Other than that issue, the post works as advertised. I use a PNW Loam Lever and I installed a new Jagwire cable. The action is kind of notchy when activating the lever. Instead of a linear push on the lever, this post has a point in the travel that the resistance is harder that the rest of the travel. Not necessarily a bad thing but it is different from others.

    >Rating: 5

    Short Term Review

    I've used it once or twice and have initial impressions

    The OneUp V2 dropper post is the first dropper that I have used. I install the 180mm dropper a couple of weeks ago along with the OneUp dropper lever and so far so good. The 180mm is a bit excessive. Overall good product.


    Does this come with the remote, or is that purchased seperately?

    >Rating: 5

    Long term review

    I've put it through the wringer

    I've had this dropper since August 2019 and trained/raced both Pierre's hole and Park City Point to Point with it. I replaced a Fox Transfer 125mm in favor of the Oneup V2 150mm. My frame would not accommodate a Fox Transfer 150, but due to the shorter insertion depth of the Oneup, I was able to get more drop, which is always good. I also shaved some weight! I've only had to check and increase air pressure once (after it sat all winter), and I'm about ready to grease it for the first time (per the 50-100 hour recommendation from Oneup). This post was easy to install, easy to service, and it has been as reliable as Fox Transfer and Bikeyoke Revive. It's also one of the lightest droppers at 480g. It's hard to imagine a better dropper.

    >Rating: 5

    Excellent dropper.

    I've put it through the wringer

    Among my favorite droppers I've tried. Only complaint is every few months it needs a refresh of grease (included, and not difficult). I purchased because I have long legs and need all the drop I can get. 210mm drop post barely fits and is so nice to have that seat out of the way. Slight amount of play after months of use but nothing worse than other posts. Raising action is fast but not so fast that it acts as a weapon on sensitive bits. It's the only post I'll be using from now on until somebody comes out with something better. I also have a 180mm drop post on my smaller trail bike and it performs just as well. No issues and highly recommend.

    >Rating: 1


    I get an ibis ripley ls from competitive cyclist, it’s a great bike, but the one up dropper and lever not good at all. It’s get stuck, work only some times. I received an email from competitive asking me how is my ibis and assigning a person for help and answer any questions I have. So I told about the one up dropper, he says we can help to replace it but when I request the replacement he said they can’t, he said I have to deal with the manufacture. I try to fix the problem putting more air pressure and make sure don’t over tight the clamp and put grease on but any thing works. So I decides to throw it away and buy a better brand, and loose my money. So OneUp dropper is garbage and competitive cyclist not a good costumer service.

    >Rating: 5

    Great dropper post at a great price!

    I've used it several times

    I was lucky enough to pick this dropper post up during the black Friday sales so I got a ridiculously low price. That being said I would still buy it at the full price. It has more features than most any dropper post out there and it works great. OneUp really has their act together when it comes to filling in the small areas that other companies seem to leave out! They are very innovated to say the least...

    >Rating: 5

    Great Dropper for a Great Price!

    I've used it several times

    My Pivot Switchblade came with a 125mm Fox Transfer. I was pleased with it, but when I started looking to get a dropper that offered longer travel and comparing prices I had to consider the OneUp. I read several reviews and then a buddy picked up the OneUp. He kept saying it was great, but I kept saying how could it be? It's half the price, (Damn Near). Anyway I finally got one, and was thinking I have nothing to lose, Competitive treats me great, if I have a problem they'll stand behind me. Well I now have a few dozen rides on the OneUp and it works just it did on day one. Smooth operation, equal to my Fox Transfer, only difference is 55mm more travel. NOTE: This model requires a cable / lever and hardware. This was the longest dropper I could fit in my 2018 Switchblade and keep my saddle height correct. 30" mid saddle to center crank shaft.

    >Rating: 5

    Great piece of equipment

    I've used it several times

    Love the shims and the new 2.1 actuator is very easy to engage. Paired with the PNW Loam Lever, I am in dropper heaven. Being 6'2", I am running 180mm travel (shimmed to 160mm with the roller pins) and am about 1" from full insertion (lol). The post has a little side to side play, but every dropper has some eventually (the guides that stop a dropper post and keep it from rotating wear overtime, completely normal) The post is fast to rise and easy to drop with my body weight.

    >Rating: 3

    Great post with one big flaw

    I returned this product before using it

    Everything about it is great, but the actuation is too hard. Right out of the box, pressing the actuator on the bottom of the post proved too hard. It requires too much force. Even the buttery smooth actuator on my Reverb (B1) got tiring on long rides - this one requires twice the amount of force. The amount required to actuate this post even with a LA Wolftooth is too much - every single time. It is possible I got a defective post, but I ordered two in differences sizes and right out of the box both functioned the same. If you have super strong thumbs, this may not be an issue for you. I'm going to stick with the Reverb - no other post matches its smoothness. All cable actuated posts have friction, this one just too much of it.

    Bought one for my wife and she has no problem using it.

    I do agree that the actuation on this post isn't as good as the best posts out there. For the money and amazingly low insertion depths this post is a winner. I have had 2 of these post in 2019 and hopefully this will eventually be something that OneUp fixes.

    >Rating: 5

    Best Dropper for the Money

    I've used it once or twice and have initial impressions

    Bought this to replace an E13 dropper on my YT Jeffsy. Had some issues with the E13 that a rebuild didn’t fix, so sent that out for warranty and replaced with OneUp. The ability to fit a 180mm dropper in a medium frame, with a 30” inseam is incredible. I didn’t even have to shim the travel down. This replaced a 150mm dropper, so now I have even more clearance with the dropper down. Installation was simple. This 31.6 post does come with the 2.1 actuator, so it is actuated by the cable pull and not the housing like the old version. Works well with my E13 remote. Post worked perfectly out of the box even with only 200psi in the air chamber, I inflated to 275 since the spec is 250-300. Operation is smooth and precise, no play at all. We’ll see how it lasts but seeing as this is the second generation of a post that was already well reviewed since it came out, I don’t think I’ll have any issues with it.

    >Rating: 5


    I've used it once or twice and have initial impressions

    If you're a short dude like me (5'7) you know how hard it is to find a dropper that will fit a FS MTB, especially Emtb's. The frames on my bikes can only accept 200mm of seat post before they hit a bend in the frame. If you want to be able to drop your seat almost down to the frame, yet have the enough rise to get into the proper ride height, this is the post you need. Most other posts that I have tried have 220mm+ housings, even on only 100mm rise. I now have 120mm of extension, and can still drop almost all the way down to the collar. It was a gamble however, OneUp doesn't give you "full insertion" specs so I took a chance on return costs to get this DP. I have the 31.6 x 120mm, distance below collar to bottom of actuator is 210mm, the actuator is only 10mm. The housing itself is 200mm. It is a little tricky to install, you have to keep constant tension of your cable or else the cable will slip out of the pocket in the actuator. There is an o-ring retention but it isn't adequate to keep the cable in the actuator pocket. It also came with what looks like needle bearings, have no idea what these are for, no instructions in box, and post came in compressed. Just thrilled to find a DP that fits my shortness. Two year warranty is great as well. The action is smooth and snappy.

    The bearings allow you to adjust your drop up 20mm.

    Those little brass pieces are shims to reduce the travel. OneUp has a video with install instructions.


    Do these have the 2.0 or 2.1 actuators? OneUp has indicated all droppers are being changed to the 2.1 moving forward, but what to clarify which actuator yours have. Thanks!

    >Rating: 5

    180mm of drop on a small frame!?

    I've used it several times

    Installed the 180 dropper on my size SMALL Juliana Maverick (for the dudes out there, that's a 2019 Santa Cruz Hightower) complete with extra low standover AND a split-seat-tube-style frame. I am beyond impressed. I dare say this is LIFE CHANGING. ALMOST as life changing as installing my first dropper post ever. I am prone to breaking out into a Super-Nerdy Happy Dance(!) just thinking about the awesomeness of this dropper (AND the fact that I no longer need a quick release seat tube collar in combination with my dropper because I finally have enough drop in my dropper that I don't have to adjust my seatpost mid-ride! And let's NOT discuss how embarrassing that was....for the last 5 years... /frowny face). Install was easy. And if you think you've hit a snag after attaching the cable to the lever, you probably just need more air in the dropper. I paired mine with a Wolf Tooth "Light Action ReMote" for SRAM matchmaker. You will also need to purchase cable and housing separately.


    How far backordered is this item? How soon will it be back in stock?

    Not sure which size you're after, but it looks like we have a ton in stock right now.

    >Rating: 5

    Best dropper option out there

    I've used it several times

    I just installed this dropper on my XC/trail/endurance race bike, which previously had a 125mm Fox Transfer, because at the time, it's the only one that would fit. This has the least overall insertion depth of any dropper on the market, and I also saved some weight by switching. I oped to get the 150mm Oneup (thinking about getting a Revekate seat pack and need 6" of tire clearance), but could have probably gone with the 180mm and put in a shim or two, which would have allowed me to slam my seat post to the frame. That's the great thing about this dropper - for riders who are shorter, or who are in an awkward size/frame range, this allows them to get the most possible drop and avoid weird situations. I've met short people who actually have to lower their dropper ever so slightly when they raise their seat to climb. This would fix that. This thing has been reliable, was super easy to install, and will be very easy to self-service (replace cartridge, lube, replace actuator cable,etc). Well done oneup! Only thing left is to design one for 34.9 seatpost diameter. I've ridden the reverb (hated it), Fox Transfer (liked it), and Bikeyoke (loved it). This is just as good as the Bikeyoke so far, and much less $$.

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