Easton EA90 Offset Seatpost

Easton's EA90 Offset seatpost gives 20mm of layback, decent weight, and good comfort. The highlight, though, is the very clever seat clamp design that allows you to adjust tilt and fore/aft independently.

• Pros: An excellent clamping system; easy adjustments; secure
• Cons: Price

There aren't a huge number of reasons that you'd change your seatpost, but it's a component that can add more than just a weight-saving or a comfort gain to your bike: position change, easier adjustments, more saddle position security...

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Easton's EA90 is its top-end aluminium offering. It comes in 27.2mm only and you get 350mm of length to play with. There's a choice of two fit options, the 20mm layback that I have here, or a zero offset option.

A bit more comfort can be found in the 20mm layback option, thanks to the slight flex increase, but I have found that zero offset seatposts are great if you're trying to get further over the bottom bracket.

This EA90 post replaced a zero-offset post on my bike and the difference is noticeable. It's very effective at killing road buzz and I also found it to be pretty comfortable off-road too.

Off-road impacts are always a good test of the clamp's ability to hold the saddle in place, too, and I had no issues here with slippage.

That clamp area is one of the best features of this seatpost, but one that could easily be missed thanks to the tidy integration of the design. The bolt that clamps the rails does only that – there's no ability to alter the tilt from this bolt. Tilt adjustment is via the two Allen key bolts at the front top end of the post. These are easy to get at, simple to adjust and everything remains firmly in place. It's a very effective system.

Why is it a good thing? Some clamps can pull the nose of the saddle down when you torque the clamp bolt. Others seem to slip far too easily.

At 265g, this isn't the lightest option, especially given the price. Pro's Vibe 20mm offset post is lighter at 250g and cheaper at £79.99. Thomson's Elite post is £89.99 and comes in at a claimed 241g in the 16mm layback option, though it is 20mm shorter.

You can spend a lot more, though. Zipp's Service Course SL post is £156 and won't give you much more comfort.

> 9 ways to make your bike more comfortable

The easiest way to trim weight from your seatpost is simply to chop it down, remembering to leave at least 80mm extending into the seat tube to ensure safety.

Easton's clamp system is really good, and if you're looking for easy saddle adjustments then this seatpost is a great choice. The weight is okay and comfort is pretty good, too.

Verdict

An excellent clamping system is the highlight, though it's a rather pricey post