Review on Enhanced Performance with EC90 Carbon Fiber Bike Seat Post - 3K Seatpost for MTB Road & Mountain Bikes Cycling by Sean Sitton

Yes, I took the $220 Xfusion seatpost off my bike to put this $25 Chinese carbon seatpost on, and couldn't be happier. It clearly copies Easton's EC90 name (the most expensive brand of carbon fiber sporting goods). Maybe the same factory sells cheaper, I'm not sure, but it looks similar in design. I bought this post because it had the thickest material around the set screw holes as well as the thickest neck of any other corner post in the $30 range. The carbon pen has thick walls for greater strength. The matte finish is nice. The innards of the seats are race-ready and not very thick, but the suspension swallows that anyway. If you're a big hardtail rider, smash those guts and then buy a replacement BMX kit. It can be used with a seat without a hole in the middle. The front screw adjusts the angle of the seat. Just use your fingertips to adjust, then the rear screw locks it in place. Holds very tight.