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Item # RSX000L

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  • Black, 31.6mm diameter, 380mm length, 125mm travel, Right ($299.99)
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Item # RSX000L

Perfect saddle height—instantly.

Now the norm, when dropper posts first showed up they were heavy and finicky (the HiteRite aside, of course). Adjustable seatposts have come a long way since then, and now products like the RockShox's Reverb take advantage of extensive suspension technology in order to provide smooth, slop-free operation.

By opting for a hydraulic actuation, the Reverb is the first post to eliminate any mechanical connection. Hydraulics may be cause for alarm, but if you're running disc brakes they're more than likely hydraulic — not to mention that they share the same, basic principles. Expect the Reverb to be as reliable and easy-to-service as any modern hydraulic disc brake. RockShox is so sure of hydraulics that it uses it to operate its remote fork lock-outs, too. In fact, both the Reverb and RockShox suspension lock-out systems use a bar-mounted XLoc remote.

This system uses 2.5-weight fork oil, and comes with the necessary materials and instructions to shorten and bleed the line. It won't become contaminated with grit like cables, and it's also lighter than a comparable cable-actuated unit. Fluid in the line opens and closes the Reverb's main oil-flow valve, allowing the post to drop. Meanwhile, the aluminum knob at the lever controls how fast the post returns to its static position. The post has either 100 or 125mm of travel, and its height is infinitely adjustable.

RockShox has an advantage over other dropper post designs due to its extensive suspension technologies. For example, the seals used are optimized to prevent contamination from dirt and water, and just like fork seals, they're free from friction out of the box. You'll also find an IFP, an internal floating piston, which is another shared technology from RockShox's forks and shocks. The IFP prevents the oil from mixing with the air preload, and it also provides a buffer if your buddy decides to lift the saddle up without pressing the XLoc button.

Both the post shaft and head are constructed out of forged 7050 aluminum and they're anodized for durability. Longer-than-average clamps support the saddle rails, which simplifies saddle fore and aft adjustment, as well as tilt, by making the two bolts easy to access. Markings on the head and clamp also assist with fine tuning.

The XLoc remote is compatible with MatchMaker X mounts in order to allow integration with brake lever and shifter clamps. Reverb posts are available with 30.9 and 31.6mm diameters, and in the 125mm-travel option, a 420mm length. The 100mm-travel post comes in a 30.9mm diameter and with a 355mm length. All Reverb posts have zero offset, and to further enhance ergonomics, it's available in both left and right configurations.

  • 7075 anodized aluminum
  • Internal Floating Piston
  • Zero-offset post
  • XLoc remote is compatible with Matchmaker X mounts.

Tech Specs

30.9 mm 31.6 mm
100 mm 125 mm
0 mm
Recommended Use:
all mountain, trail
Manufacturer Warranty:
2 years

Reviews & Community


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Avg. ride time: 2h 24m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

The Convenience Really Is Worth It

    I have a Reverb Stealth on my other bike and love it so much that I decided to get one for both. Price had held me back in the past but the convenience really is worth it. The upside down mounting suggested by others is a great idea. Make sure you buy the right seat post diameter.

    Seat Goes Up, Seat Goes Down

    • Familiarity: I've put it through the wringer

    This is perhaps the most cost effective up grade to any mountain bike. The ability to fine tune saddle height across varying terrain is an essential function for riders, regardless of skill. Reverb uses hydraulic internals and this makes for a very smooth actuation. However, it also means you need to have a proper bleed to support smooth operation. The package comes with a bleed kit, and you can utilize this video from Bike Radar Once you've got that dialed and the mess cleaned up, it should be all good. Pro tip: one by users should opt for the Right-hand actuator version so you can mount it on the underside of the left handlebar.

    Game changer

    • Familiarity: I've put it through the wringer

    I don't know why I waited so long for a dropper. I've read complaints about the Reverb being hydrolic and having to bleed it is a pain, but this is much easier than a brake to bleed. And it doesn't need to be a perfect bleed to work properly. I had to shorten the hose length and my daughter pushed he dropper switch while it was off, high made most of the oil squirt out. This kit came with a bleed kit and a whole bottle of oil to fill back up. This was for my old Ibis Mojo, since it doesn't have internal cable routing. I also have the a Reverb in Stealth for my SC Nomad

    Im 5'8" with a Medium Santa Cruz Bantam got from you guys last year, which size dropper you recomend?

    Hey pipemanics - I would recommend the 30.9mm diameter, 355mm length, 100mm travel Reverb Dropper Seatpost for you based on your size. Also, I could not find your order for the Bantam. What email address did you use to order it? Feel free to contact me directly with any additional questions.

    - Kyle L. - Expert Gearhead - - 801-736-4337

    Great post

      Great post, although it isn't prime for colder weather. I didn't take that into consideration when buying it and used it in temps in the 30's and it became sluggish. Look forward to using it in the spring

      Game Changer

      • Familiarity: I've put it through the wringer

      I love love love my Reverb Dropper Seatpost. I've had it for the past few months and haven't had any issues with it besides it making my rides way more enjoyable. Can't believe I went so long without one. The Reverb seemed pretty easy to install (husband installed it for me one evening with no issues, it was his first experience installing a dropper). The push lever to drop and raise the seat doesn't take much force so it's really easy to use while riding. Also, it's great that it's infinitely adjustable versus only having only 2 to 3 specific settings. I did a ton of research on which brand to buy and I'm happy I went with this RockShox. Make sure to order the exact size for your bike, since I'm a smaller female didn't actually have the correct size and they recommended me to find it elsewhere. Thanks!

      Probably the best thing I've bought...

      • Familiarity: I've put it through the wringer

      The RockShox Reverb Dropper Post is probably the best thing I have bought for myself all year, it's truly a game-changer. While it's relatively easy to justify not buying one, I can assure you that if you do decide to pull the trigger, you will not be disappointed; you'll be wondering why it took you so long to make the decision. Having the ability to customize the seat height mid-ride is what it's all about - you'll be faster on the downhills and just as fast on the ups.

      Very good seatpost

      • Familiarity: I've put it through the wringer

      I dont have any bike park, here in Brasil, so I have to climb every slope before get down! This seatpost let me do more technical descent even with short suspention travel bike! It s easy to operate and its not too heavy!

      Very good seatpost
      Avg. ride time: 3h 11m per week
      • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

      I have an XL tallboy 2 and am 6ft3". Which length reverb post would you recommend? 100mm drop or 125mm?

      Hi Geop, I bought the 125 mm to have bigger amount of drop! I think, as you are tall, the 125 mm will be better!

      Reliable dropper

      • Familiarity: I've used it several times

      Just got this dropper and it is super sweet, Couldn't be happier with how easy it was to set up and how well is works. Definitely would recommend to a friend, but the only downside is the cable attaches at the top of the post so when it is all the way down it kind of gets in the way, A few zip ties does the charm keeping it down. Love it overall though.

      Great Dropper

      • Familiarity: I've put it through the wringer

      I've had one of these for about 8 months now and I am very pleased with the continued top notch performance. It operates as smoothly and reliably as the day I installed it. Installation is very simple (there are some great instructional videos out there), and if done carefully, it is not necessary to bleed the actuator hose. It can take a little bit of time to get the routing just right and to set up the hose "loop", but there are several ties and a neat hose guide included with the unit.

      I have recently purchased a new bike and outfitted it with the KS Lev dropper. While the KS is a solid piece of equipment, I believe I prefer the Reverb - it just seems to operate a little more smoothly and never sticks, whereas the Lev sometimes needs a little "bump" to unstick it when it has been in the down position for awhile.

      As others have said below, if you have room (ie no front shifter on the left side of the cockpit), it is a great idea to order a right hand trigger and place it under the left side of the handlebar. Make sure this will work for you though as the trigger is left or right side-specific. Also, make sure you order the right length.

      One thing is certain...I will NEVER not have a dropper post again. It has improved my riding and increased my enjoyment. I use it constantly, and once you get accustomed to it, you'll find yourself moving your seat up and down unconsciously.

      Keep the rubber side down

      Avg. ride time: 1h 40m per week
      • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

      Right on the money!

      • Familiarity: I've put it through the wringer

      Woah, I knew I should have bought one of these sooner! Just couldn't sacrifice spending the money, as they are pricey! But, unlike other things, this was money well spent! I wouldn't know what to do without it now. Was easy to setup, shorten line, and bleed. Very simple! So far, this product has been reliable, no issues what so ever! Just a FYI, there is a slight side to side movement of the saddle once installed. This is normal, and cannot be felt while riding.

      Right on the money!

      Add more cables to your bike

        I was so stoked to get a dropper after years of adjusting my seatpost with a quick release multiple times during a ride. It took a little getting used to. On my first ride I accidentally shifted when I tried to raise my seat on the fly. I could see why people would get the right handed option and put it on the left for when you flip your bike upside down to clean it. I haven't had an issue yet with the long loop of cable that expands and contracts every time I adjust my seat. It does require a little extra care when you throw your bike on a stand though.

        Decent Dropper

        • Familiarity: I've used it several times

        I like this dropper but there are some things that it could do better. The action and the adjust-ability of the seat post is great. I prefer to flip the lever over and mount it upside down on the handlebar, which allows for you to push the button down more easily and also protects the button if you flip your bike and need to place it upside down to do some quick field maintenance. This is the great part of the reverb, the only thing I don't like is that the hose attaches to the top part of the seat post which move the entire hose when you change the height of the seat post. The KS Lev has the hose mounted at the base of the seat post, close to the seat post clamp which holds the hose more static during use. The stealth version of the reverb does not have this problem but the normal reverb does. All in all it is a solid dropper. If you have any questions about this or any other dropper please give me a call and I would be happy to talk to you about them.

        Here is my contact information: My direct line 801.736.6396 ex. 4389. Feel free call to me anytime, I?m always happy to talk about bikes or gear or the weather. Whatever works! I?m here Mon, Tues and Friday 1:30-10pm MST and Saturday 9-5:30 as well as Sunday 10-7. I look forward to speaking with you.

        I use the "underside" mount for the lever to my Fox DOSS dropper to for the same reasons. If I were to order the Reverb, and wanted to mount it "underside' on the left side, should I order the right or left hand version?

        The image shows the "stealth" version, but...

        The image shows the "stealth" version, but the title and description don't mention that feature. Is it in fact the "stealth" model? Also, if I order it even though it's not currently in stock, how long does it take to actually get it from the distributor and [ultimately] to me? Are we talking a few weeks or will it be months? TIA.

        This is not the stealth version. The stealth version's cable goes directly into the bottom of the post.