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As with all aerodynamic upgrades in cycling, it is a culmination of marginal gains that will start to make noticeable differences to your riding. So, yes, seatposts can make a difference but, in most cases, aero seatposts will come in a proprietary design to fit a specific bike, making upgrade options considerably limited. Do carbon seatposts make a difference? How much is the nose of the saddle behind the BB measured vertically with the bike on level ground?
When it comes to cancelling vibrations, there are several steps brands take to aid this in frame construction: using thin seatstays; placing the seatpost clamp lower down so that more seatpost is exposed (allowing for more flex); and using a narrower seatpost A carbon seatpost is effectively an additional step; a cherry on top. Aero posts: While most posts (and seat tubes) are circular in cross-section, many manufacturers are now making aero posts for road and TT racing, with an elliptical ‘blade’ cross-section which offers improved aerodynamic performance by offering less frontal area to the wind. However in the case of ‘full’ aero seatposts you will require a frame with a matching seat tube, which limits the options when it comes to changing or upgrading. Some manufacturers get over this by offering posts with a shaft featuring a ‘normal’ bottom half, with the part above the seat clamp then shaped to a bladed aero profile. Racers should look for the lightest and stiffest carbon seat post that they can afford. So long as your reach doesn’t get compromised it may be worth trying an inline post too for increased pedalling power – especially on seated climbs.If it has a round seatpost, however, you are likely to have far more options – but diameter becomes all-important. The two standard diameters are 27.2mm and 31.6mm and all of the seatposts featured in the guide will fit one of those two sizes, while some have more options in between. Rear lights can be a bit of an issue when it comes to an aero post, although many brands now offer adaptors that allow for the shape. The saddle clamp will be held in place with one or two bolts. Twin bolt systems are more common as they are more secure and spread the load better. Some have the bolts fore and aft, some are left and right, it just depends on manufacturer.
Some manufacturers produce a saddle with an oval shape rail which can only be used with corresponding seatpost. It looks round from a distance until you try and put it in a traditional saddle rail and tighten it… ColourIn short, no. Seatposts are an area where bike manufacturers seek to make gains in weight, aerodynamics and comfort – so there are a whole range of different types that come with different bikes. If you don't feel your bike needs to be any more comfortable, and you're not fussed about 100 grams, then aluminium seems like a smart choice. If you want to drop the weight or add some cushion, look to spend more. The Twin Link clamp uses two bolts with expanding wedges to adjust saddle angle and is easily accessible from the sides below the rails. Part of the Enve Road range with the Enve Road bar and stem, it's unsurprisingly top-level componentry with a top-level price to boot.
They all do the same job and look pretty much the same but take a closer look and you’ll see a lot of subtle differences. We usually take very little notice of seat posts but they can have a surprising effect on the comfort of the ride.Like handlebars, wheels, and nearly all other bike components, seatposts come in a variety of materials, the most common being aluminium and carbon fibre. As always, carbon commands a higher price tag, but it usually weighs less and can be constructed in a way that dampens more vibration while maintaining directional stiffness in a way that will benefit the rider.
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