OneUp Components Launches 27.2mm Dropper Post

Aug 25, 2022
by OneUp Components  
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Press Release: OneUp Components

The OneUp Components V2 Dropper Post is now available in a 27.2mm diameter in 90mm and 120mm lengths for Gravel and XC bikes. At only 377g, the 90mm travel post weighs less than most 40mm droppers.

With the shortest stack height and shortest total length of any post with the same travel, no other dropper post can get your saddle lower.

The new size expands OneUp’s Dropper range, which now includes 27.2, 30.9, 31.6 and 34.9 diameters, with travel options from 70mm to 240mm in 10mm increments.


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Get more drop on more bikes with the 27.2mm Dropper Post and 31.8mm Drop Bar Clamp.


Features


Light weight
Lowest compressed stack height of any dropper post
Reliable sealed cartridge internals
User replaceable cartridge ($69.50 USD)


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Specs


Warranty: 2 Years
Routing: Internal
Diameter: 27.2mm
Travel: 90mm / 120mm
Length: 340mm / 410mm
Weight: 377g / 435g
Stack Height: 123mm / 153mm

Compatible with cable dropper levers and Sram and Shimano Disc Brake, Dropper Post Levers.

Pricing


Dropper Post: $199.50 USD / $249.50 CAD / £179.50 GBP / €199.50 EU
31.8 Drop Bar Remote: $59.50 USD / $72.00 CAD / £52.50 GBP / €59.50 EU

In stock and available now at oneupcomponents.com


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Author Info:
OneUpComponents avatar

Member since Nov 25, 2013
57 articles

115 Comments
  • 109 0
 Been waiting for this to drop
  • 70 0
 Was really glad to see this post.
  • 26 0
 It's pricing, warranty and sizing is OneUp on most competitors.
  • 12 0
 Sounds like the competitors are getting shafted.
  • 15 0
 I can't say I'm remotely interested myself.
  • 15 0
 I suspect inflation will make them go up.
  • 3 1
 I seriously have to stop dropping things.
It’s really been getting out of hand.
  • 36 0
 Do many frames with 27.2 seat tubes have internal routing for a post?
  • 10 0
 That's a great question, I can't think of one. Maybe a lot of gravel bikes do?
  • 17 0
 A lot of gravel bikes have internal routing these days.
  • 5 0
 Most gravel bikes come with the routing available these days. I'm pondering getting one of these... but also I'm concerned I'll start smashing wheels if I feel more confident on the downhills.
  • 12 2
 I was hoping they'd make an external cable option (like KS does). I need one for my old hardtail, which has a 28.6mm seat post diameter.
  • 3 0
 my 2018 Devinci Hatchet does, and i use it.
  • 6 0
 @bonkmasterflex: they make cushcore for gravel bikes. DownGravel? Gravelduro?
  • 7 0
 There are still some XC frames around, like my 2018 Chisel.
  • 2 1
 Many gravel bikes and XC hardtails.
  • 2 0
 @CSharp: Same !! My On One Inbred frame needs this but no internal cabling Frown
  • 2 0
 What would happen if I drill a hole in ST?
Also, could a sub 30 kg kid compress that post?
  • 4 0
 My Specialized Diverge does. Been running a PNW 125 drop rainier for a little while now.
  • 3 0
 I've installed droppers on two bikes without specific internal routing. One was an older Trek Superfly 9.8SL and one was a Salsa Vaya. The Superfly had enough room in the BB to snake the cable through around the BB and up through the frame to a cable port by the HT. The frame was designed for either internal or external brake routing, so the brake cable had to be moved to the outside of the frame so that cable port could be utilized for the dropper. On the Salsa we drilled a hole about 75mm above the BB on the seat tube and routed the cable through there. After the hole was drilled, I used a small endmill to cut the hold oblong. I touched up the paint and it's been fine since.
  • 9 0
 Personally, I run a 27.2 PNW ranier for a few months of the year on the gravel/fun bike. External routing and I just throw some electrical tape around the top tube for routing. 5 minutes to install with the PNW road lever. Awesome to have the dropper for riding silly stuff on the gravel bike, then it is quick to take off for cyclocross season.

Riding a dropper for cyclocross would seem to make sense except there is a huge risk you'll gash your knee open on the lever as crazy crashes and incidents happen. Cyclocross is the like the last remaining true underbiking anyways so it is kind of cheating to have a dropper post.

So...I prefer externally routed 27.2 posts so it isn't such a pain in A** to change!
  • 4 3
 Do many people feel the need for a dropper on a gravel bike? Ive put a few thousand miles on mine w/o one on a lot of pretty techy south west single track and I've yet to find a need for one... Seems like a whopping 2 inches of drop isn't worth the added weight. Bandwagon buy or legit?
  • 8 0
 My Krampus didn't until I got the drill out.
  • 1 0
 @pakleni: I've drilled my steel frame and no issues after 18 months of use.
  • 1 1
 My devinci hachet gravel / road bike does!
  • 3 0
 @scallywagg: My main desire for a dropper on my curly bar bike is from longer descents, not gnarlier ones (I'm assuming some baseline of moderate technicality here).

The issue is that, at least for me, I stay in the drops for the rougher descents for hand security. So staying low up front with a high post strains my neck and shoulders quite a bit. I'll admit there's PT/prehab/strengthening I should be doing. But still, a dropper would help this out for me.
  • 2 0
 @pakleni: my sub 30kg kids can do the regular ( 30.9 / 31.6 ) posts in 120, and they shoudl use the same internal cart.
  • 2 0
 @CSharp: brandx. quite reliable and cheap.
  • 1 0
 +1 on the drill idea. A small slot in the seat tube should not harm the integrity of the frame.
  • 1 0
 @thats-joe: I'm pondering drilling a hole in my old hard tail seat tube and downtube for routing.
  • 2 0
 @mior: re: Brand-X dropper - price is amazing. Warranty is pretty good. However, only internally routing only, weight is higher, and only in the 30.9 and 31.6 diameter seat tube sizes.
  • 3 0
 @scallywagg:
I recently put a dropper on my gravel bike and it's brilliant!
Not only does it mean I can ride more technical singletrack but
(A) fast descents on twisty tarmac with a lower centre of gravity are so much more fun
(B) on long non-technical descents, dropping the post means less strain on my neck/shoulders
(C) more aero...
  • 2 0
 @CSharp: www.chainreactioncycles.com/ca/en/brand-x-ascend-ii-dropper-seatpost/rp-prod159176
27.2 and external. have the same one on my cheap hardtail
  • 1 0
 @mior: Nice! It's weird because I went onto CRC earlier an it only showed the two sizes and without the 27.2mm one with the external routing. Thnx!

Is this one fairly easy to maintain (take apart for annual maintenance). Guess for that price, you can get another a few years later.
  • 1 0
 My 2014 Norco Theshold is 27.2 and has internal dropper routing.
  • 1 0
 they certainly have the potential
  • 1 1
 @scallywagg: I got my first gravel bike (and drop bar bike in general) last year and used the QR seatpost clamp as a manual "dropper" a lot. This year I don't think I've touched it. I got reaccustomed to the weird contortions that riding technical trails with a high seat requires and now it doesn't seem worth the faff to put it down. Would I drop it if it were easy? I mean, sure, but the bike has 40mm tires, a 70 degree head angle and no suspension, so I'm not going to be winning any DH races on it anyway... I'm with ya, it doesn't *quite* seem worth the extra pound, and I honestly kind of like the simple, old school awkwardness of riding without it. Fixed seatposts are the new singlespeeds! Moving parts, bah humbug!
  • 1 0
 any frame can have internal routing if you're brave enough with a drill
  • 1 0
 @scallywagg: This exact conversation happened around shorter travel trail bikes, then XC bikes. I love not having my hips higher than my hands when descending, even on a gravel bike.
  • 3 1
 @scallywagg: Dude people need their mtb droppers to drop 200mm+ strait to the frame now or they'll actually argue they can't ride the bike properly. It's laughable that "stack height" is now a thing for droppers. Im surprised they can even ride a static post at all.
  • 1 0
 I've run an internal dropper on a couple of bikes without provisions for it and put hole into the seattube of a couple very trusting friend's bikes as well. My first mtb had a bottle cage mount on the ST and I just drilled and filed out the threads of the lower bolt hole at a downward angle to fit the cable housing, could even use the upper bolt hole and some electrical tape to mount a pump bracket still, there's a hole there anyway but sometimes if this is a rivnut it doesn't always like to cooperate when trying to file it out enough so that the cable doesn't get too kinked, just takes a bit of patience and some good small files. On another bike I drilled out a hole on the backside of the front derailleur brazeon where it attaches to the tube by a reinforcement plate. Its also totally doable by just making a completely new hole on the front side (or wherever depending on your aesthetic preferences and tool clearance) of the ST approximately 1"-2" above the BB welds, just need to make sure its a nice clean hole and be able to clean up the burrs on the inside of the tube well, either with a file or a deburring tool with a hooked blade, some sandpaper and a hooked rod or stiff wire, or ideally a flex hone brush and an extension to get all the way down there. You can either use a premade rubber internal routing grommet (requires the hole to be more precisely shaped), a couple layers of heat shrink at the proper location on the housing itself, or make a DIY grommet with some sugru and thinwall brass or aluminum tubing, I've found this at my local Ace hardware branded as K&S Metal Shapes, or can be found on McMaster-Carr as 260 formable brass tubing in 0.014" and .45mm wall thickness or telescoping corrosion resistant 3003 aluminum tubing in 0.014" wall thickness. 7/32" or 6mm OD in the aforementioned wall thicknesses will fit 4mm shift housing (or the 4.5mm OD Jagwire housing with the fancy braided colors too) and can be used either as a form for the sugru and removed fairly easily if you polish the tubing and with some oil to act as a mold release, or with some careful shaping of the ends of the tube it can be left in place glued into the ST hole as a more rigid housing guide. A guide tube could also be glued in place more rigidly with some JB weld or other good epoxy, or hell even solder it in place (on a steel frame), or go all out and learn to braze a reinforcement/guide tube in place on a steel frame.
  • 1 0
 I have no interest in a dropper on my gravel bike, but I could see it being useful for a lot of situations.

Remember that guy winning a road race with a dropper on his road bike?
  • 1 0
 My 1998 trek Y bike does but unfortunately my steel kona robe gravel bike doesn’t.
  • 17 1
 This is just a marketing email, but it's still good news. Decent travel, decent price now for skinny seat tubes. Current OneUp posts are awesome!!
  • 8 0
 I was waiting for this post and hoping for an externally routed version! Guess I'll drill...
  • 4 0
 PNW Rainer 27.2 works great. Externally routed. They have a Road lever too you mount on the bars near the stem.
  • 1 0
 @dr-airtime: PWN fits the bill perfectly
  • 1 0
 @dr-airtime: That's a way better idea than drilling a hole in a steel frame, but I have standardized on and have spare parts for OneUp!
  • 1 0
 @silverstanktions: Do these share any of the internal parts with the larger diameter droppers?
  • 1 0
 @HollyBoni: The website makes me think so, but I could definitely be wrong.
  • 7 0
 Perfect upgrade for my kids' trail bike too
  • 1 0
 Does it work with 30kg kid? It's a sealed / non-adjustable cartridge..
  • 2 0
 Just bought one a couple of weeks ago, so surprised to read this. Building a primo gravel rocket and this was cheaper than the Fox SL, has more travel AND allows for various heights. A no brainer and shipped from Squamish to boooot eh.
  • 5 1
 Call me when someone makes a 26.4 one for the vintage Peugeot road bike crowd
  • 3 0
 any love for 26.6?
  • 4 0
 Throw in a 25.4 for the old school BMX crowd while you're at it.
  • 4 0
 gimme a 22.2 for my 1934 klunker, shims will help you guys.
  • 5 0
 Great to see OneUp make a 27.2! Drop bar homies rejoice!
  • 1 0
 Public Service Announcement to all Drop Bar Homies:

Get a Pro/ Shimano Lever.


Everything else is a waste of money.
  • 5 0
 @Telemahn: I converted my curly bar bike to 1x then cut the ratchet out of my shimano left lever for dropper use
  • 2 0
 @rmbarrows: I'm tempted to as well, but 2X is way better for my needs. Plus I run 3 wheelsets (road, off-road, and commute) and 3 wide range cassettes is a big incentive to stick with 11-28
  • 6 0
 GRAVEL GANG REJOICE!
  • 1 0
 I miss the lever under the saddle TBH. I need a dropper for a few of my retro pre-2000 bikes, and there are not many around at all. I dont want anything else on the bars, and the levers always worked great. I had a KS dropper, but they are few and far between these days.
  • 1 0
 . . . . .. . . . . . . . . . ,.
  • 1 0
 I sing the praises of my one up dropper any chance I get! At a smidge over $200 for more an 200mm of travel, I would never even think about anything else. I also love how simple and easy it is to maintain and service. Definitely one of my favorite parts on my bike
  • 1 0
 I would prefer the 90mm in 30.9 to become available, I've been waiting like a 6 months o so ... My kid will get to ride 29er sooner then it becomes available ....
  • 1 0
 Wish they made an external option. I have an old Trek Sawyer I'm turning into a bikepacking/gravel/adventure bike and need external.
  • 1 0
 Good news, is this dropper able to be set at each height (infinite adjust) or is it a up/down option like the transfer SL?
  • 8 9
 I hope everyone hates this comment but they missed an opportunity to do a suspension post as well in this diameter. Similar to what PNW components does.
  • 3 0
 I don't think oneup is in the suspension post market.
  • 1 2
 I agree. I would like to see more suspension dropper options.
  • 11 0
 I liked your comment just to frustrate you
  • 3 0
 I have the bike yoke that locks out when at full length but gives a little cushion between full out and closed. It is a good design.
  • 3 0
 I love my squishy PNW dropper. Made my hardtail actually enjoyable to ride. I do wish for a longer travel one though.
  • 1 0
 I've used a long travel Cane Creek Thudbuster on my commuter for quite some time and really really love it, but after getting used to that and trying out a PNW Suspension dropper I wasn't all that impressed. The CC linkage swings backward in a nice arc that is well matched to the seated body position, but a telescoping suspension seatpost can only travel in the same direction as the seat tube, which is down and slightly forward. Still a pretty great post from PNW nonetheless, but I'm not completely sold on that design of seatpost suspension, what I really wish existed is a linkage seatpost suspension mechanism that can be installed directly to the post rails rather than a complete seatpost.
  • 2 0
 26.8mm for my .243???
  • 3 1
 It'll void the warranty but you can always ream your seat tube to 27.0 and sand down .1mm off the wall thickness of the seat post to make it a 27.0 also.
  • 3 0
 @deeeight: I’ve actually considered reaming the seat tube but then I remember I’m a lazy pos
  • 1 0
 I wish some one would make a 26.8mm dropper for some old school bikes.
  • 1 0
 @93EXCivic: gravity dropper has been for awhile now...I just don't want to spend $300+ when Oneups work so well @ $200

gravitydropper.com/gravity-dropper-turbo
  • 1 0
 @deeeight: Something tells me the warranty's probably run out.
  • 1 1
 @deeeight: Yes, simply reduce the OD of an aluminum tube by a precise amount with sandpaper. lol

Probably wouldn't be super difficult on a hobby grade wood lathe with some careful setup and a keen eye, but this task really calls for the use of an actual metal lathe and some precision experience. I don't know what the wall thickness of the lower tube of an average dropper post actually is, but it could be pretty damn thin, and this part is often not sold as a replaceable component of the dropper assembly.
  • 1 0
 @artistformlyknowasdan: I can't ever get their website to work anymore. Are they still around?
  • 1 0
 @93EXCivic: Yes - I didn't have an issue getting website up

www.pinkbike.com/photo/23241215
  • 3 4
 PNW's 125mm Rainier Gen3 for $50 less, 5mm more drop, 22mm shorter max insertion, 7mm less total length
  • 5 0
 Edit: PNW: +37mm full insertion, +17mm stack, +42mm total length
  • 3 0
 @the-one1: The OneUp is also lighter weight and the same price as the PNW.
  • 1 0
 @stella10: Jenson has a sale on PNW droppers right now, ~$50 off
  • 2 0
 @the-one1: Always a good sign when shops are blowing them out Wink
  • 2 1
 WooHoo!
  • 1 0
 WooHoo!
  • 1 0
 WooHoo! !
  • 1 0
 hmmm! ! !
  • 1 0
 (Sep 13, 2022 at 9:09)
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