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Item # EAS0131
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Easton EC70 Setback Seatpost $0.00
Thanks to genetic differences, we'll never all ride the same equipment. Luckily, companies like Easton make different seatposts that reflect our particular sizing needs. If you find yourself in the camp that prefers a setback post, the Easton EC70 Seatpost may just be the winning ticket. It features proven aluminum/carbon composite construction and weighs as little as other seatposts costing twice as much.
The EC70 uses a two bolt design for the seat rail clamp. We've found this to be generally superior to single bolt clamps in terms of minute adjustments in saddle tilt. There are no splines, teeth, or otherwise to dictate exactly where you can position your saddle. The design relies on two simple bolts to apply even torque to both ends of the clamp and each is adjusted independently of the other to secure the unit. The forged alloy clamp assembly is bonded to the seatpost shaft, which is made of their CNT carbon fiber and uses Easton's Taperwall and RAD (relief area design) technology to minimize the material while preserving the strength necessary for a durable post worthy of their 5 year warranty.
The Easton EC70 Seatpost has 10mm of clamp offset and is available with a 350mm length in three diameters -- 27.2mm, 30.9mm, and 31.6mm. 215 grams
Reviews & Community
Comfortable, tough and light Seatpost
Haven't had any problems with this seatpost, it works as advertised and takes some of the sting out of the trail when riding. I replaced an Easton EA70 offset seatpost with this . It is very similar but lighter and has bigger bolts for clamping down on the saddle rails compared to my Easton EA70 offset post.
Could be better.
I wanted an offset, two-bolt seatpost so that I could try several of the newer carbon rail saddles. Although the EC70 does the job, it could be improved upon.
First, the only way to accommodate the larger rails on the newer saddles is to undo the adjustment screws to the point that the bottom plate is loose (and likes to fall out while you try to juggle the saddle rails into place). To be fair, though, Easton does not claim the EC70 is meant for oversize rails.
Second, the metal collar at the top of the post is very soft, and the front adjustment bolt is set in so close to the column that you cannot torque the bolt (as required) without gouging a groove into the front of the collar. That is, even a small torque wrench with a narrow wall hex driver will still ride up against the too-soft metal.
The new Fi'zik seatpost is a better design. They eliminated the front hex bolt and replaced it with a thumbwheel. They also reconfigured the head design so that oversized rails install more easily. They also included a handy rubber collar that is movable so you can mark your vertical setting on the post.