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Bontrager Teases New XXX Carbon Seat Post

Written by Zach Overholt
11 Comments
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Bontrager Seat post XXX new

In preparation for the upcoming TrekWorld show at the famous Silverstone Circuit, Trek bicycle UK and Bontrager have been tweeting some photos of the newest goods. Among them – what looks to be an all new design for the Bontrager carbon XXX seat post. In addition to new sculpting of the carbon presumably to increase compliance, the post has an all new clamp design that offers independent fore/aft and tilt adjustments. This of course is a move away from their commonly used single bolt design, but it looks to still make adjustments extremely simple. Even with the extra hardware, Trek UK is claiming it still weighs in at 168g.
Zach Overholt
5,727 articles

Zach Overholt is the Editor in Chief of Bikerumor. He has been writing about what’s new in the bicycle world for 12+ years. Prior to that, Zach spent many years in the back of a bicycle shop building and repairing nearly every type of bike, while figuring out how to (occasionally) ride them.

Based in Ohio, Zach is now slowly introducing a new generation to cycling and still trying to figure out how to fit the most rides into a busy schedule as a new dad.

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Pancakes
Pancakes
10 years ago

This is potentially great news. The single bolt design on the current Bontrager post/mast things are the biggest reason I haven’t even considered Treks. I assume they’ll offer this head for Domane/Madone/Emonda, yes?

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Chader
Chader
10 years ago

The single bolt head design should be banned from existence on any seat post. They are horrible for MTB use and even poor for road applications and slip commonly on bumps and pot holes.

I hope this moves into the seat mast cap for Trek’s main line bikes. I agree with Pancakes, it is one of the only things I don’t like about their line.

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wako29
wako29
10 years ago

@Pancakes: why is that? I have had this system on my Boone and had zero slipping issues, even with doing CX re-mounts and such

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Dudehism
Dudehism
10 years ago

I’ve been running the single bolt version on all my mtbs for years with zero issues. I do like this redesign though.

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Ty
Ty
10 years ago

@Pancakes and Chader, tighten to 16Nm with a torque wrench and it will not slip. Only problem with slipping is with home mechanics who don’t own a torque wrench.

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Tom
Tom
10 years ago

@Ty well put.

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Tim
Tim
10 years ago

This design looks clunky and inelegant. I would never buy it and I would replace it if it came OEM.

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taylor
taylor
10 years ago

@Ty, thank you!

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Chader
Chader
10 years ago

Yes, I do own and use a torque wrench. Despite that, I have still had issues with the Specialized and Trek designs. I am fairly confident that is why you don’t see the design the Spech MTB posts any more.

Additionally, the prototype for the Redshift seatpost from Kickstarter had a single bolt design. During their funding process, I and many others point out our concerns about their single bolt design. They changed to a 2-bolt/fore-aft design that works great.

I know there are plenty of people who experience problems with these despite the fact that the do work for others. IMO, from an engineering standpoint, it is a flawed design. I think there are much more reliable designs that don’t have the potential issues see in the single bolt design.

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Nick
Nick
10 years ago

Despite never having used a torque wrench on mine I had no problems with the old design moving, don’t let that get in the way of your high horse though! This post looks a bit fussy, but I’m sure, like all Bontrager kit, it’ll do the job well.

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Wut.
Wut.
10 years ago

The logic applied here hurts my brain.

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