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SDG ComponentsTellis Dropper Seatpost

Sale 7% Off$249.99 $269.99

Item # SDC000E

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  • Black, 30.9/170mm ($249.99)
  • Black, 31.6/170mm ($249.99)
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Item # SDC000E

Bombproof reliability.

After two years of extensive research and development, SDG Components introduces the Tellis Dropper Seatpost to eliminate the pitfalls in reliability and complex servicing inherent to many popular dropper posts on the market. That means you'll be able to ride your Tellis Dropper without worrying about constant servicing or bleeding requirements, even in the most extreme conditions. SDG did their homework in the lab by subjecting the Tellis Dropper Seatpost to a self-contained vat of muddy grit and moisture for months on end, finding it remained clean and fully functional without moisture and dirt ingress sacrificing its ability to drop and return upright in a smooth, speedy fashion.

SDG didn't stop there, deciding it's best to bring the Tellis into real-world conditions most riders will subject this dropper to over time. Their secret shed in Kamloops, British Columbia served as the perfect location for testing a dropper seatpost, seeing Kamloops sits in an area that's prone to short cold snaps down to negative four degrees Fahrenheit (that's negative 20 degrees Celsius for you Canadians). This is a huge benefit for riders extending their season through late-autumn and early-winter months where colder temperatures usually make for sluggish dropper post performance or ill-functioning when your dropper fails to return upright.

Delving into the construction of the Tellis, the robust 3D-forged head is sleekly appointed and stronger than bonded heads found on other dropper seatposts. Inside the post, you'll find a sealed hydraulic cartridge system that's both extremely reliable and easy to service or replace down the road. Also, SDG uses an intelligent keyway system that eliminates lateral head movement, plus a wiper seal that keeps muck, grit, and moisture from seeping inside and ruining your dropper's performance. It's completed with a scratch-resistant anodized finish and laser-etched graphics for dialing in your saddle height.

Please note, the thumb actuation lever mounts on the left side of your bars and works best with 1x drivetrains (it may get in the way of older 2x/3x systems with a left shifter mounted to your bars). For installation, there's a relatively painless attachment located at the base of the Tellis Dropper, so you can quickly connect, then route your cable through the frame. Routing is internal only, meaning it won't work with older frames lacking internal dropper routing.

  • SDG introduces a bombproof, easy-to-service dropper post
  • 125 or 150mm travel lengths, 30.9 or 31.6mm diameters
  • Tested to work reliably to -4° F without being sluggish
  • Sealed hydraulic cartridge is reliable, easy to service
  • Wiper seal keeps out muck, grit, and moisture ingress
  • 3D-forged head is stronger than bonded head designs
  • Intelligent keyway system eliminates lateral play
  • 1x thumb remote included, internal routing only

California Proposition 65


Cancer and Reproductive Harm - P65Warnings.ca.gov

Tech Specs
7075 forged clamps
30.9 mm, 31.6 mm
[125 mm Tellis] 390 mm, [150 mm Tellis] 440 mm, [Tellis actuator] 27 mm
125 mm, 150 mm
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, 30.9/170mm
Black, 31.6/170mm
This includes the lever uncut cable & housing.

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[30.9 x 150 mm] 552 g, [lever] 36 g, [housing and cable] 87 g

View more Dropper Seatposts

    What do you think about this product?


    >Rating: 5

    A truly special dropper post

    I've used it several times

    Yes, we've all heard that before, but this one lives up to the hype. First, outstanding buying experience. My gearhead Kyle always comes through! Easy enough installation and it comes with everything you need to install. Now you could say that a dropper post that goes down and comes back up isn't anything special, and that would be true. My previous three droppers have had no issues with that. Lateral play is a different story. I've sent several back for that issue. The Tellis has no play at all. Good so far. After hitting the trails a few times, it is clear that what sets this one apart from a use perspective is how easy the supplied lever is to use. The action is so light, my initial thoughts were I had not secured the cable. This light action allowed me to move the trigger to a more comfortable angle on my bars. It also allowed me to better modulate the height of the saddle when riding. Color me impressed! Top all this off with a product that is easy to service at home for if/when something goes wrong (great videos on YouTube) and it is easy to see why I will be replacing my other droppers with the Tellis.

    >Rating: 5

    Simple Install & Super Smooth Drop

    I've put it through the wringer

    I was looking to replace my Reverb post with something more reliable and more user friendly, so after reading countless positive reviews on the SDG Tellis I decided to give it a shot. Install couldn't have been easier. Cable clamps at the lever, so I installed cable head in bottom of the post, pulled cable through housing and tightened the cable and the lever. Used the barrel adjuster to dial in tension and it was good to go! First thing I noticed was how soft the actuation is on the lever. Lever feel isn't something I can say I noticed on other droppers, but now every other one I've tried feels stiff compared to this. The post drops instantly and with no noticeable stiction. Return speed isn't adjustable, but it's a perfectly comfortable speed. Doesn't scare you and you don't have to wait for it to return (like my Reverb in the cold). Probably the best thing I can say about this post is that I just forget it's there. Between the super soft lever feel and the minimal effort to drop it, it's a simple fluid motion and the best setup I've tried. I haven't had any issues with it yet, but one of the reasons I purchased was how easy it looks to service. They look like they have a full slew of service videos on their website and small parts available. Coming from a super service intensive and user unfriendly post, I'm stoked on how simple the Tellis looks to be!

    >Rating: 1

    Broke after 4 rides and I only weigh 170

    I've used it several times

    4 rides and it is stuck in the low position. Have to pull it back manually. I only weigh 170. Also, it b Never raised and lowered easily. It was very sticky

    Hi there John, Did you check the seat collar tension? I know on mine the return of the dropper was quite slow until I backed off the collar bolt. I also found the new bushing to smooth out the actuation - we have a few here if you'd like us to send you one. The dropper has worked without any issue after the collar tension adjustment for over a year now. Please let us know what we can do to make it right.

    >Rating: 5

    SDG Dropper

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

    This dropper post is very nice. The lever is very easy to pull and you don't feel the cable tension at all when you press it. Has infinite adjustments.

    >Rating: 5

    Drop it like its hott

    I've used it several times

    Great dropper post that comes with a trigger as well. Super Sturdy and fully sealed to keep dirt or mud from damaging the internals. Highly recommended!

    >Rating: 5

    Great dropper post

    Easy installation, works great.

    >Rating: 5

    best dropper i've run yet

    I've used it several times

    Solid, quick action. Easy to install and minimal lateral play. Barrel-end style cable is a great idea especially since you can make final adjustments at the thumb remote. A little tough to push the seat down when you're off the bike (for loading or storing purposes) but never any issues while riding. This will replace my other KS and I'll recommend it to anyone in the market for a new dropper.

    Agree on how tough it is to push the seat down when you're off the bike. first time this happened thought the dropper was broke. just took some getting used too. came from a Race Face which I loved, but had to replace it after it failed twice. My competitive cyclist rep was awesome and hooked me up. Highest level of confidence when I purchase anything from Competitive Cyclist.

    >Rating: 4

    Best Dropper for your money

    I've put it through the wringer

    Five months in and I finally feel I can write an accurate review of the Tellis. Initial impressions were positive, as my non-mechanically inclined self set it up with no issues. I agree with Derrick below that the 2mm hex screw could be burlier, but overall fine tuning of the lever has been easy. I've put in a lot of miles this summer and the Tellis has reliably actuated every time I press the lever (except for the time I over-tightened the seat collar). I have not needed to service it yet, but I feel when the time comes the simple design will allow for an easy re-build. The lever is a little too light action for my taste, but other than that I have no complaints and look forward to continued use.


    Update: SDG has improved the bushing for the Tellis, so if you ever found the actuation to be a touch slow this might be the fix you need. The process is simple and only requires a few moments of your time. Still the best value dropper out there!

    >Rating: 4

    Solid Construction, Reliable, Durable

    I've put it through the wringer

    I've had the SDG Tellis on my bike for a few months now replacing a Fox Transfer and its been just down right impressive. The lever action is lighter and smoother than my Transfer, even my Wolftooth equipped Thompson Elite! Works every time and snaps back quick with that nice audible THUD you know you're ready to get back in the saddle and on the gas. I've even had a few high speed crashes twisting the entire post in the frame. Loosen the seat post clamp, center her back up, and back to good as new. I can't believe the conditions I've put this thing through and it still keeps doing what a good dropper should do. The mechanic in me fully disassembled the post to find a sealed cartridge for easy drop in/drop out replacement if the day ever comes when she dies. Really happy with this post, only reason it didn't get 5 stars is because of the small 2mm grub screw which holds the cable. I've not had any problems with it, but if it had a clamp design like the Wolftooth, this would be the perfect post!

    >Rating: 5

    Incredible Dropper

    I've put it through the wringer

    Four days before leaving to bikepack the sunshine coast and the other trails that make up the BC Bike Race, my Reverb decided to completely fail. The super helpful folks at competitive (Joe Draper) focused me in on the SDG Tellis and got it delivered to WV in one day. Incredible service. I installed the dropper in 10 minutes which led me to believe that I was missing something. "How can it be that easy? I haven't even finished my beer." I took it on one ride and then packed it up to fly westward. Over the next two weeks, I rode a couple hundred miles of gnar and the Tellis has performed flawlessly. I am using this with the wolftooth remote that was already on my Mojo 3, but I am pretty impressed with the build quality and feel of the remote they supplied. Everyone needs a dropper and this one checks a lot of boxes.

    >Rating: 5

    Reliable Performer

    I've put it through the wringer

    The best thing about this post is that I nearly forget that it's on the bike. And isn't that really the point, and a prime indicator of a great component? It operates seamlessly, with reliable actuation, and has not required any maintenance. Definitely a solid effort from SDG.

    >Rating: 5

    Probably the best deal on a dropper

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

    This dropper was extremely easy to install. Seems to be build very strong. I was a little worried about the return speed as there isn't any adjustments that I can see. However it's perfect. I like a rapid return and this provides it. Now if you like a slower return you may not like this. My previous dropper was a hydraulic hose/lever and I'll never go back to that headache. The cable actuated lever is the way to go for simplicity as well as functionality. It is as claimed "effortless and smooth". It even comes with the post and you don't have to order it separately. There's enough housing to fit any bike with a lot of extra. Even has the ferrules and a black cable end crimp. Let's talk about the saddle side to side rotation.... SDG claims there isn't any but there is. Naturally there has to be a little for it to work as you would imagine. But, it is soo slight you'd hardly notice it when moving it with your hands, sitting on the saddle you will never feel it at all. Really, it's that good. I am super impressed with the post at a very affordable price tag. I'd be surprised if they don't go up on price when riders find out how good it is and the demands increased. I was planning on spending near double until the SDG was recommended. The ONLY thing I had a small problem was getting my saddle installed as the clamps are a very low profile. Not really a negative because once it's on.....it's on and looks great. Highly recommended whether you want to spend a little or a lot. But all I can say is it performs as good and even better than some higher priced post. I've been ride for 30 years and have been a bike mechanic for many of those so I'm not new to high/low end components. You'll be pleased and glad you saves a few dollars.

    Thanks for the Advice 💥