Weight: 235g / Sizes: 27.2, 30.9, 31.6mm / Five-year warranty / Length: 400mm / Contact: Extra UK 01933 672170

We tested Easton’s full-carbon EC90 seatpost a while back; it weighs 190g but costs a whopping 150 sniffs! This EC70 is a level down in terms of weight and, more importantly, price.
The cheaper alloy upper clamp adds 12g but the other 30-odd grams are in the shaft. It’s still made using Easton’s CNT (Carbon Nanotube) technology; minute carbon atoms are mixed with the resin, which Easton says results in less weight and greater strength.
There are height stickers on the back of the shaft — this area is also flattened so they’ll stay that way even with repeated lowering. Not that we’d recommend this post on a bike where you’re moving the post a lot; we’d go with one of Easton aluminium posts if that’s the case. Saddle tilt is adjustable by adjusting the 4mm bolts on the clamp but they’re hard to get to with a multi-tool, we used a loose Allen key.
There are lighter posts on the market, like the £20 Kore post we tested last month, but the EC70 is top quality, and if you believe the hype, the carbon construction also offers a degree of shock absorption.

MBR rating: 8/10