Skip to content

Choose your

/ Black ; Finish / Anodized
Select a color

Bontrager Line 34.9 Dropper Seatpost

Model 5285197

$219.99 Comp. Value

A reliable dropper seatpost with a 3-key chassis design that minimizes shaft play for a post that provides smooth and consistent travel adjustment.

Get up to get down&nbsp

The Bontrager Line 34.9 dropper seatpost offers reliable and infinite adjustability within multiple dropping ranges to suit riders of all types. A 3-keyed chassis design provides additional lateral rigidity and minimizes play while a 2-bolt rocker head is perfect for fine-tuning saddle tilt. Line 34.9 is also designed with a shorter overall length, which allows more adjustability and frame compatibility.

Need an even shorter drop? Grab a 10mm or 30mm travel reducer spacer.

Product details

  1. Air-sprung hydraulic locking cartridge offers infinite adjustability within dropping range
  2. 3-key chassis prevents rotation for a stable ride
  3. 2-bolt rocker head with micro adjustment allows for easy saddle tilt adjustment
  4. Shorter overall length [versus previous version] allows more adjustability and compatibility
  5. Fine tune your fit fast and easy with 10mm and 30mm travel reducer spacers
  6. Lever sold separately. Compatible with Universal Lever, Under Bar Lever, and Elite Under Bar Lever
  7. Internal cable routing keeps housing tucked away and free from moving wheel
  8. Frame must be compatible with internally routed seatpost routing
All your favorites, all in one place

All your favorites, all in one place

Get all your favorite apparel from over 80 of the world's best cycling brands delivered right to your doorstep or local Trek retailer when you shop our curated online collection. If you're not 100% satisfied, you can return your purchase within 30 days for a full refund.

Shop all gear
Born in a barn

Born in a barn

Get an inside look at how the company got its' name, why it decided to start it's life in a barn, and more!

Read more
Go By Bike

Go By Bike

Planet Earth is our home and our responsibility —we must do our part to preserve it. Learn how you can join the #GoByBike movement and help make a difference in the future of our planet and all who call it home.

Read more
How-to content

How-to content

Wondering how to properly fit that new helmet you just got? Need some tips on how to ride with your kids? How about ways to be more visible to cars? We've got that and a whole bunch more!

Learn more
Culture

Culture

Trek culture is who we are, what matters to us, and what we do as a brand. Take a look behind the scenes at Trek’s global headquarters.

Read more
Responsibility

Responsibility

There's a lot more to Trek than making the world's best bikes and cycling gear. Learn more about everything Trek is doing to make the cycling space safer, more inclusive, plus a whole lot more fun.

Read more