Alternate method: Use a fabric or paper measuring tape (or print one at https://printable-ruler.net/ ) and measure the circumference of the steerer tube. You will need to remove the compression cap and loosen the two pinch bolts to get access to your steerer tube so be sure you are comfortable in doing so and then reassembling properly. On the rough trail, the spring seatposts are, by a large margin, the most effective at mitigating vibrations (17-24% improvement when compared to a carbon seatpost). A suspension seatpost is a great comfort upgrade, as it will both absorb bigger hits, as well as dampen vibrations coming up from the road. This essentially means you’ll feel fresher at the end of a long ride.

I’ve only gotten four or five rides in with the new Thudbuster, but I’m quite impressed. The redesigned seat clamp is fantastic, and I found the new elastomer system to work very well. Unlike some of the softer, coil-sprung posts, the new Thudbuster offers a nice mix of chatter dampening and medium-hit suspension to take the edge off of sharper bumps. And, it doesn’t feel as if it has as much of an effect on pedaling efficiency as other, longer travel posts do.With the knowledge that my tyre volume and pressure could cope with the sort of impacts I normally try to avoid, I steered towards the roughest patches of tarmac, potholes, ancient cobbles and uneven gravel.

The small unweighted saddle height increase needs a slight adjustment when mounting up for the first time. At the suggested preload setting, I immediately felt neutrally suspended and didn’t notice any negative effect on seated pedalling. Suspension seatposts allow you to pedal while seated on terrain that normally requires standing up. Compared to a rigid post on the same bumpy climb, I find that my legs often feel fresher simply because I’m standing up less. Rather than using a full-suspension bike (for comfort), you can fit a suspension seatpost to a hardtail and enjoy similar levels of comfort without the extra weight, price and complexity. 4 Reasons To Not Use Suspension Seatposts The Cane Creek eeSilk is less than 100 grams heavier than a high-quality aluminium seatpost. Disfunctional_Threshold : I have the Syntace P6 Carbon Hi-Flex seatpost. I've never been able to detect any flex in it at all.Here’s where it gets interesting though. I’ve been suffering from some knee pain recently from a noncycling incident, and thus have been spending a little more time seated while pedalling than I may have liked. Agreed, I just realised I didn't need the extra comfort and unfortunately am cursed with finding squeaks and rattles especially annoying!

Another option is the Canyon S15 VCLS 2.0 CF seatpost. The post is split into two sections which pivot at the top, giving vertical compliance, and it works very well indeed. It came on the Grail CF SL 8.0 SL that I tested, and the added comfort was very noticeable. The ThudBuster ST (gen. 3 and earlier) has so little effective suspension that it barely smoothens the ride at all. There's surely marginal improvement compared to a rigid seatpost, but it's barely perceptible. These seatposts are particularly active or ‘bobby’ in the initial part of their travel, so they tend to be better suited to rougher trails, rather than smoother roads – in my experience. The easiest way to reduce this movement is to adjust the spring pre-load – or the amount of force required to cause the saddle to start moving. This will stop the saddle bob, but will also reduce the seatposts ability to take the edge off small bumps.

Take control - customizing your suspension feel to float over obstacles so you can maintain control Stem Details:

When we measure seatpost vibrations in a laboratory setting, we find that some seatposts can absorb 15x more vibrations than others. For example, the Thomson Elite seatpost was tested by Microbac Laboratories to absorb just 0.025gs of vibrations while the Ergon CF3 was absorbing 0.375gs. The 20mm of travel you get may not sound like much, but it’s the way it delivers its movement that sets it apart from other suspension posts.Cane Creek’s eeSilk suspension seatpost offers 20mm of elastomer-based vertical compliance and is made from forged and machined aluminum with titanium fastening hardware. This emphasis on premium materials, along with the post’s minimalistic design, means the eeSilk weighs in at less than 300 grams–a comparable weight to many performance alloy seatposts.