I purchased this seat post the beginning of April, and i was impressed with it's affect on the ride of my road bike. The seat angle adjustment was a bit finicky but i was able to get it right after awhile though it did come loose on a couple of rides. Towards the end of the month the post cracked right under the seat clamp mechanism. I contacted BTD and they forwarded me to Fizik's warranty claim dept. I sent all the information with photos in and even though in the middle of the Virus pandemic i received a replacement within 1 week from Taiwan!! And 1 week later i received another seat post with an obvious re-design. Very difficult to ask for more especially during these difficult times. Excellent product and company!!!
I bought this post hoping it would smooth out my ride a little bit, and it did just that.
Does the road disappear completely? No, but was it a noticeable difference? Yes! It's very easy to install and adjust and holds my Di2 battery fine. I've not had any noises or slippage and it looks better in person. This post does what it claims to do without feeling any flex or bouncing. I weighed it with my gram scale at 187g for the 31.6 size.
This is a really nice light weight post, but it took a few days to figure out how to stop the squeeky noise. Initially I thought it was the postframe connection, nothing I did would make it stop...untill I realized it was from the postseat connection. The plates which clamp the seat are aluminum, the post is carbon. When I took the fizik seat clamp appart and applied carbonalloy assembly compound to the joint between carbon post and aluminum plate, problem solved, the squeeky sound ceased.
I have always favored Cyrano seat posts from Fizik for their adjustment mechanism - it's simply brilliant. A thumbwheel to adjust the tilt and then you tighten down the rear bolt to snug it up. It is far easier to adjust tilt on this post than on almost any other post I have used. That said, prior Fizik carbon and especially their aluminum posts are rigid and lack almost any vertical compliance making them uncomfortable if you have a frame that doesn't not have a lot of vertical compliance.
However, this seat post is amazing. Prior to this, I had been using a Ritchey Flexlogic seat post which was designed with considerable vertical compliance and which effectively took out a lot of harshness of a ride on a rough road. However, that post got it's compliance from, essentially, fore and aft movement which turned the post into an egg shape as it moved and caused it to slip. Very difficult to hold vertical position with that post. Long story short, it was time for a change.
When I saw this post, with the unique cantilevered carbon arm, I gave it a try. This post has just as much, if not more, compliance than the Ritchey (which was very good) and it has that wonderful Cyrano Fizik adjuster! I bought it, put it on and am very pleased. This post gets it's compliance from the flexing of the cantilevered arm (up and down and not fore and aft). Does a great job at taking out the harshness of the ride and is easy to adjust. This just became my new favorite seatpost.