30.9mm Dropper Post 350mm 100mm Drop Height Under Seat Control Switch

$139.00
or 4 interest-free paymentsof $34.75 with
SKU: DP309M

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The 30.9mm Manual Dropper Post is the perfect upgrade for any shared-use or trail-focused bike. Featuring an integrated manual switch directly beneath the saddle, this post allows quick height adjustments—up to 100mm of travel—without the need for remote levers or external cabling. This simple, clean design makes it easy to install and ideal for riders who frequently switch between climbing and descending or share bikes with others.

Built from strong and lightweight 7050 aluminium alloy, this dropper post offers consistent performance with a sleek matte black finish. The seat post installs just like a standard post and requires no additional hardware or cables. Simply replace your existing post, bolt on your saddle, and it’s ready to ride.

Fast and Easy Seat Height Adjustments

The 30.9mm Manual Dropper Post gives you the freedom to fine-tune your saddle height on the fly. With just a press of the under-saddle switch, you can lower or raise your seat to match your terrain or riding preference. Whether you're dropping into a descent or cruising uphill, this seatpost gives you flexible control without cluttering your handlebars.

Need to fit it into a slightly larger frame? We offer 31.6mm seatpost shims, allowing you to install this 30.9mm model in a 31.6mm seat tube without any trouble.

30.9mm Manual Dropper Post Specifications

  1. Brand: Adsports-Meroca
  2. Model: DP309M
  3. Control Type: Manual hand-switch under saddle
  4. Dropper Type: Hydraulic with up to 100mm travel
  5. Material: 7050 aluminium alloy
  6. Post Diameter: 30.9mm
  7. Minimum Insertion: 100mm
  8. Maximum Insertion: 220mm
  9. Offset: 18 degrees
  10. Surface Finish: Matte black, sandblasted anode
  11. Total Length (Extended): 350mm
  12. Weight: Approx. 570g

To fit a 31.6 mm seat post tube we have 31.6mm seatpost shims available.

Key Benefits of This 30.9mm Manual Dropper Post

  1. Fully cable-free for quick, clean installation
  2. Manual under-saddle switch gives on-the-fly height adjustment
  3. Perfect for shared bikes or riders who like variable seat heights
  4. Durable and lightweight alloy for all-terrain use
  5. Compatible with 31.6mm frames using available seatpost shim

Simple Setup, Reliable Performance

Unlike cable-actuated dropper posts, this post is easier to maintain and install. With no levers or wires to thread, you’ll have it fitted in minutes. Attach your saddle with the single-bolt clamp, adjust your seat angle, and you're ready to ride. The 30.9mm Manual Dropper Post offers intuitive operation and solid hydraulic function across every ride condition.

Ideal for Trail Riding, Commuting and Multi-Rider Use

This dropper seatpost is excellent for trail riders who want quick adjustments before descents. It's also ideal for commuter bikes shared by different riders, ensuring the right height every time. With a durable matte black finish, it looks as good as it performs.

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