In our opinion, the dropper seatpost is the single most important innovation in mountain biking. It's certainly the component we don't want to ride without. A dropper seatpost is also the number one upgrade we recommend for new mountain bikers. Having the ability to drop your saddle can improve your cornering ability, boost rider confidence, and make your time on the trail more fun.



The Best Dropper Post For Your Mountain Bike

PNW Components Loam
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PNW Component's Loam stands out from the crowd of dropper seatposts with a great price, short stack height, and tool-free system to adjust the amount of seatpost drop. The travel of the Loam can be reduced by up to 30mm, in 5mm increments. If you need more adjustment than that, the Loam is offered in versions with 125, 150, 170, and 200mm of adjustable seatpost drop.

Related: PNW Loam Dropper Review

Pros:
  • Affordable
  • Very reliable
  • Adjustable dropper length to maximize the amount of drop for your frame
  • Adjustable return speed

Cons:
  • Dropper lever sold separately (The Loam Lever is a great upgrade, however)

Price: $199
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BikeYoke Revive 2.0
Best Dropper Post: Bike Yoke Revive
Of all the dropper seatposts we've ridden the Revive has the smoothest action. The silky drop and return makes this dropper feel like a premium component, with very little side-to-side play. We've tested this post extensively. It's incredibly reliable but does need a bit of quick and easy maintenance now and again. Occasionally, (and usually only after lifting the bike the saddle with the seatpost lowered, which you should avoid doing) the post will sag a few millimeters. Thankfully, Bike Yoke makes it easy to remove air trapped in the dropper's hydraulic circuit. Resetting-or reviving-this seatpost just a matter of actuating the bleed port lever and compressing the post to allow air to escape. This can be accomplished on the trail in less than 10 seconds. The Revive comes in a wide range of lengths and diameters to fit virtually any modern mountain bike.

Pros:
  • Incredibly smooth actuation
  • Many different lengths to choose from
  • Rebuildable
Cons:
  • IFP system does allow for air to enter the system and requires bleeding (Thankfully this is an easy fit you can do on the trail)
  • Expensive
Price: $315-$479 (depending on length)

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OneUp Components Dropper V2
Best Dropper Post: OneUp Components Dropper V2

As the name suggests, this is the second version of OneUp's dropper post. The V2 is available in 120, 150, 180, and 210mm lengths and can all be shimmed down in travel by 10 or 20mm. The ability to fine-tune travel with the included travel shims, along with this post's category-leading low stack height (shortest total length per travel size), lets rider run the longest possible dropper for their saddle height. This is a huge advantage for shorter riders who want to run 150mm or even 180mm droppers on small and medium-sized frames. What else is there to like? Well, the price is really, really good.

Pros:
  • Affordable
  • Rebuildable
  • Low stack height
  • Up to 20mm of travel adjust

Cons:
  • Not as smooth as higher-end seatposts such as the BikeYoke

Price: $199.50-$215 (depending on length)

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Fox Transfer
1937362
The Fox Transfer sets the bar for set-and-forget performance. One of our test droppers is going on its fourth season of hard riding without the slightest amount of maintenance. It comes in the gold, Kashima-coated version that will add bling to your bike as well as a standard black version that will keep more money in your wallet. For the 2021 model year, Fox has introduced an updated version of the Transfer. Depending on the amount of drop you go with, the insertion length is 30-50mm shorter than the previous version. This allows many riders to opt for a longer travel post, especially if their previous one was bottoming out in the frame.

Pros:
  • Reliable
  • Shorter overall length for each size than the previous version for improved frame compatability
Cons:
  • Kashima coating looks good, but costs more with no performance advantage

Price: $359.99
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RockShox Reverb AXS
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RockShox was a pioneer at bringing dropper seatposts to the masses. The Reverb is one of the most widely-spec'd dropper seatposts and has gone through several revisions over the last 10 years. The latest addition to the Reverb family is the AXS version. This premium dropper ditches the hydraulic line used on other Reverb's for electronic actuation to wirelessly communicate between the button mounted on your handlebar and the dropper post. This post also uses lower-friction IFP than previous versions that allows for faster drop and return speeds. Last but certainly not least, the Reverb AXS features the company's Vent Valve system that allows users to easily purge air from the IFP system if the seatpost starts to sag.

Pros:
  • Smooth and fast operation
  • Completely wireless means it's easy to install, swap between bikes, and remove for travel
  • Electronic control allows for a wide range of button customization
  • Users can quickly bleed air from the dropper on the trail if it starts to sag
  • No cables means less cluttered cockpits
Cons:
  • Less reliable than similar high-end droppers such as the BikeYoke Revive
  • Battery charging and firmware updates mean this dropper is not a set-and-forget component
  • It's the most expensive dropper on the market
Price: $800
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Trans-X Kitsuma
1937365
Almost all dropper posts are internally routed on modern mountain bike frames, but there's still a demand for externally-routed droppers among riders looking to bring their older bikes up to speed. If you have an older mountain bike-or even a gravel bike-that uses a narrower, 27.2mm seapost. The Trans-X Kitsuma dropper is your best bet. It comes in versions with 90 or 110mm of travel. This externally-routed dropper has a smooth action, performs reliably, and comes with a wallet-friendly price tag.

Pros:
  • Compatible with externally-routed mountain and gravel frames
  • Reliable
  • Affordable

Cons:
  • Limited to only two drop options (90 and 110mm)

Price: $159.00
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What To Look For In A Dropper Seatpost

Best Dropper Post

The best dropper post for your mountain bike should be reliable and affordable.

There are dozens of different dropper seatposts on the market. Unlike a few short years ago, most dropper posts are pretty reliable these days. Like any good bicycle component, a quality dropper should function without you thinking about it. The best dropper post for your mountain bike is the one that performs reliably, with little to no maintenance, and balances performance with price.

As with many bicycle components, you need to keep in mind a number of factors when shopping for a dropper seatpost for your mountain bike.
  • Seatpost routing: The first thing to consider is if your frame is compatible with an internally-routed dropper post (almost all modern mountain bike frames, and many gravel bike frames, allow for an internally-routed dropper seatpost. Older mountain bike frames (those manufactured before 2014) may not feature internal cable routing for a dropper seatpost. These will somewhat limit your dropper seatpost options, though there are still quality externally-routed droppers available.
  • Seatpost diameter: The diameter of the dropper seatpost much match the inner diameter of the seat tube on your frame. There are several common sizes used on mountain bikes. Most modern mountain bikes use 30.9mm or 31.6mm seatposts, some use 34.9mm seatposts as well. Many older mountain bikes, especially hardtails, use 27.2mm seatposts.
  • Insertion depth: You need to consider how much clearance you have in the seatpost tube before you encounter obstructions that will limit seatpost insertion. Things like suspension pivots, a bend in the seat tube, water bottle bosses, and the dropper seatpost port can all limit the length of the seatpost you can use.
  • Dropper stroke: Insertion depth, along with dropper stroke (how much the seatpost travels from extended to compressed) go hand in hand. Longer stroke droppers require a greater insertion depth.
  • Minimum insertion length: All seatposts feature a line that marks the point at which the seatpost should not be extended further. Doing so may cause damage to the seatpost as well as the frame.
  • For more info: PNW has great chart to help you understand dropper seatpost sizing.

Are there any great dropper seatposts that you think we missed? Let us know in the comments below.



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