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Easton Haven Zero Setback Carbon Seatpost

Out of Stock

Item # EAS0174

2013 This model is no longer in stock.

Item # EAS0174

Description

Smart science in a savvy seatpost.

Easton's Haven Zero Setback Carbon Seatpost is only 50 grams heavier than the brand's ultra-XC-focused EC90 Carbon Seatpost, even though the Haven is built be to mounted on long-travel, all-mountain rigs that will see far more shuttle runs than leg-searing uphill churns. If it's a head scratcher how a carbon post is fit for all-mountain fun, the secret is in the sauce.

Said ingredients include not only using carbon, but knowing where to take it away. That is, Easton uses Relief Area Design, RAD for short, that pares some of the material on the back of the seatpost, leaving a lengthwise flat strip. This is where most seatpost clamps over-stress the post, especially if you apply too much force to the clamp. By flattening the rear of the post the pinch force of the clamp is redistributed around the entire shaft, relieving any potential over-stress.

Easton also builds the Haven Zero Setback Carbon Seatpostwith a TaperWall layup schedule. This determines that the shaft of the post that sits inside the seat tube is reinforced, but the exposed length is lightened to reduce weight. Of course, the clamp/seat rail zone is also bolstered so it can handle all of the levering forces from the saddle. Additionally, TaperWall is a computer-designed system -- both the layup schedule and actual application are precisely controlled so that all plies are completely smooth and void-free. Voids and peaks and valleys in a layup create their own stress points that interrupt load forces and can later result in failures. And if all that sounds like mumbo jumbo, know that Easton backs this post with a five-year warranty. That's not mumbo jumbo at all. That's confidence.

Easton'sHaven Zero Setback Carbon Seatpost has a uni-directional Matte Black carbon finish with a magnesium anodized clamp assembly. It's available in a 400mm length and 27.2, 30.9, and 31.6mm diameters.

Tech Specs

Diameter:
27.2 mm 30.9 mm, 31.6 mm
Length:
400 mm
Material:
[shaft] 100% carbon fiber
Offset:
0 mm
Claimed Weight:
240 g
Recommended Use:
MTB
Manufacturer Warranty:
2 years

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Here's what others have to say...

5 5

Does what it's supposed to

It's really light, really strong, doesn't creak, and holds your seat. you should get it.

locks the seat with a vertical clamp so it's compatible with saddle rails that are asymetrical.

5 5

wow

Lighter weight and more diesel then most aluminum seat posts. Not much else to say. Noticeable vibration dampening coming from an aluminum post. Crunching your carbon seat post via over tightening QR/BB is a thing of the past thanks to Easton's RAD design.

One thing to note: if you care about aesthetics, be sure to clean the internal seat tube prior to installation. The matte carbon finish is easily scratched if used with a dirty seat tube. This doesn't affect the integrity of the post ( Easton mentions that deep gouges can lead to failure), but if you are throwing down $130 for this post, might as well keep it looking good.