Dropper Post Overview: 170mm and Up (and Down)

March 05, 2019

If you're buying a new mountain bike, odds are that you want the longest dropper you can fit in your seat tube. Longer droppers allow you to get lower on your bike and descend more safely, as well as providing a more comfortable sitting position while you wait for your friends with shorter droppers. With so many posts on the market why would you pick one over another? Here are five we think are worth considering:


Bike Yoke Revive 185mm - $450 (with remote)

When dealing with a saggy dropper post just isn’t for you. Bike Yoke’s unique revive valve allows you to purge air from the seatpost within seconds, using only a 4mm allen wrench and without removing the seatpost. This is not the lightest seatpost out but it stands out because of its smooth action and reliability. The included Triggy shifter-style remote is comfortable and Matchmaker X compatible

Rockshox Reverb AXS 170mm - $800 (with remote)

This may be the most expensive post on the list, but it is also the most interesting. You may be thinking about your older sagging Reverb, but this is not like that. Like the Revive, this Reverb AXS has an air-purging valve. You need to remove the post and use a special tool to use it, but luckily with no cable to bind the post in the frame it is super easy to do! The electronic remote is very comfortable and offers practically instant activation of the post. Setup time is non-existent, so if you want one post to use in multiple frames, this is an easy choice. We are also intrigued to see how people integrate Reverb functionality with their standard AXS shifters (it is possible to activate the dropper with the shifter's third button).

OneUp 170mm - $199 (no remote)

It’s $199 and it works, well. If you’re not sure your post will fit your frame, this one is for you. The remote (sold separately) includes a plastic shim to adjust this post down to 120mm. Want a 166mm dropper? You got it. 153mm? Yep, you can do that too. This is by far the shortest long travel dropper option. Even at full length, this 170mm post has the same overall length and exposed stanchion as a Fox Transfer 150mm. One thing to keep in mind - if you have a newer Santa Cruz, the cable routing of the frame does not allow enough housing movement for this post to work properly.

Fox Transfer 175mm - $294 (Performance series, no remote), $344 (Factory Series, no remote)

Fox made a big splash with the Transfer post is 2017. Unmatched reliability (at the time) made this our most popular dropper for quite a while. One of the best features of this dropper is the lever modulation. More than any other post on this list, the Transfer allows you to control the return speed by pressing the lever softer or harder. The 175mm version has a longer overall length than most of the other posts on this list so it should appeal to taller riders. It is also the only post available to match your Kashima fork and shock. Pair it with a Wolf Tooth Remote Light Action if you want the smoothest lever feel.

KS Lev Integra 175mm - $389 (with remote), $559 (carbon, with remote)

KS was more than likely the first dropper post you’ve heard of. They’ve been around for years and make a solid product. It’s got a really smooth action and they’re from Orange County (local for us!). In the past KS has not had the best reputation for reliability, but we’ve had great luck with them recently. It includes a duck-bill shaped lever, which a great option for those of you opting to run a 2X drivetrain. This is already one of the lightest posts on the list, but for an extra $170 you can opt for a carbon body and titanium bolts (additional 95g weight savings).

If you want to get a feel for these in person, most of these posts are available to try at our Newport Beach, CA store! Did we leave out your favorite dropper? Let us know in the comments!

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