30.9 Dropper Post
External Routing 100 mm Drop 380mm Long


Availability: In stock

Our best value dropper post range includes a 30.9 dropper post with external routing plus other sizes. These adjustable bike seatposts are 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.

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

These automatic adjustable bike seatposts use external cables. This means they can be used on any bike to convert to a dropper seatpost using our best value dropper post range.  Providing you have either a 30.9mm, 31.8mm, 31.6mm, 33.9mm or 34.9mm seatpost.

30.9 Dropper Post External Routing Our Best Value Dropper Post

This MTB seat dropper post range represents extremely good value for money as they include the cabling. As well as including the cabling this MTB dropper range 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

As well as using these seatposts to raise and lower your bikes seat automatically you can also pivot your seat. The cradle angle angle can be adjusted -5 to 18 degrees for further comfort.

best value seatpost angle adjustments 5 to 18 degrees

To keep your MTB dropper post in good condition we recommend regularly applying grease to the collar as shown below. By doing this it will ensure a smooth adjustment of the post.

adjustable bike seatpost close up

  • 30.9 Dropper Post External Routing Specifications
    • Total length: 380 mm.
    • Adjustable travel: 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 angle: -5  to 18 degrees.
    • GTIN: 0735202381809.
  • Finish: Black sandblasted matte anode.

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



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