30 Day Unconditional Guarantee
For Trek, Bontrager and Electra products, if for some reason you're not 100% happy with your purchase, you can return it within 30 days for a refund - no questions asked!
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.
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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 load more!
Learn moreCulture
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.
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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 and more inclusive, plus a whole lot more fun.
Read moreProduct features
Sizing and fit
Click 'Learn More' to dive into the details and ensure that you get the right size seat post that will work with your frame and fit needs.
Travel reducers for the perfect fit
Fine tuning your travel is fast and simple. Travel reducers are available in 10 mm and 30 mm sizes and install in minutes. Simply loosen and lift the collar and fitting, align the reducer, reinstall the fitting and tighten the collar back up. Getting the perfect fit is easier than ever.
Faster Return
MaxFlow technology moves hydraulic fluids through the system quicker, for a faster return and smoother overall operation.
Easy to set up, easy to drop
The Line Elite 34.9 requires 20% less saddle force to lower the saddle and comes with one of the easiest installations in the business.
Larger 34.9 Diameter
The post’s larger diameter allows for an increase in structure strength and provides better performance with less stiction, less side-play and better durability.
30-Day Unconditional Guarantee
If for any reason you’re not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
Learn more| Size | 34.9mm x 315mm x 100mm | 34.9mm x 410mm x 150mm | 34.9mm x 450mm x 170mm |
|---|---|---|---|
| Diameter | 34.9 mm | 34.9 mm | 34.9 mm |
| Length | 315 mm | 410 mm | 450 mm |
| Travel | 100mm | 150 mm | 170 mm |
| Seatpost type | Dropper posts | Dropper posts | Dropper posts |
| Offset | 0 mm | 0 mm | 0 mm |
| Rail compatibility | Universal | Universal | Universal |
| Material | Aluminium | Aluminium | Aluminium |
| Weight | 478g | 566g | 607g |