34.9 Dropper Post
External Routing
100 mm Drop + Adaptor


Availability: In stock

SKU: DP349-100A Categories: ,

Our seat post dropper range includes a 34.9 dropper post with external routing. This adjustable bike seatpost is hydraulic. The height can quickly and easily be adjusted up or down by up to 100mm. This is useful when a bike is used by more than one person or if you need to adjust the height of the seat while riding.


  • 150 mm travel: This dropper post has a travel of 150 mm. This is a good amount of travel for most mountain biking applications.
  • External routing: This dropper post has external routing which is quick and easy to install. It also doesn’t require holes to be drilling into your bikes frame.
  • 34.9 mm diameter: This dropper post has a 34.9 mm diameter. This size is becoming a common size for new mountain bikes.
  • Durable construction: This dropper post is made from durable materials. These materials include a forged alloy body and a stainless steel shaft.


  • Improved control: A dropper post allows you to lower your seatpost. This gives you a lower centre of gravity and makes it easier to control your bike when going over rough terrain or descending.
  • Increased comfort: A dropper post allows you to lower your seatpost, which takes weight off your sit bones and makes it more comfortable to ride for extended periods of time.
  • Better weight distribution: A dropper post allows you to lower your seatpost. This can help to improve weight distribution on your bike and make it easier to handle.
  • More versatility: A dropper post allows you to adjust your seat height quickly and easily, which can be helpful for riding in different terrain or situations.
  • Increased safety: A dropper post can help to prevent you from getting bucked off your bike when going over rough terrain or descending.

Product Information

This automatically  adjustable bike seat post uses an external cable. Because of this they can be used on any bike with a 34.9 mm seatpost mounting tube without having to drill a hole for the cable.

30.9 Dropper Post External Routing Our Best Value Dropper Post

This seat post dropper is good value for money as it includes the external cabling. As well as including the external cable the dropper also comes with an activation switch. To raise the seat using the MTB dropper post simply hold the switch and remove your weight from he bike seat. Alternatively to lower the height of the bicycle seat sit on the seat while holding the switch in.

30.9 dropper post external routing switch

The seat post cradle angle angle can be adjusted -5 to 18 degrees for further comfort. This makes these dropper posts dual purpose in function unlike some of the cheaper posts available in the market.

best value seatpost angle adjustments 5 to 18 degrees

Regular maintenance is recommended to keep your dropper in good working order. This can be done by regularly applying grease to the collar as shown below. Doing this it will ensure a smooth adjustment of the post.

adjustable bike seatpost close up

34.9 Dropper Post External Routing Specifications

    • Model: DP349-100A.
    • Total length: 380 mm.
    • Post diameter: 31.6 mm with 34.9 mm seat post adaptor shim.
    • Adjustable travel: anywhere between 0 -100 mm.
    • Approximate weight: 710 grams.
    • Cable length: 150 cm.
    • Cable entry: External.
    • Type: Hydraulic and air pressure sealed cartridge.
    • Material: Aluminum 7050 alloy.
    • Cradle adjustable angle: -5  to 18 degrees.
    • Finish: Black sandblasted matte anode.

27.2 mm seatpost droppers are also available, click here for more information.



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