Valdora Phoenix (PHX) Full Carbon...for...TT / Triathlon When you run across the PHX in person, you can't miss it.... In fact, you probably won't be able to take your eyes off of it. Weighing in at a mere 1.24 kg (M size), the performance is exceptional. Made from high strength carbon fiber composite utilizing proprietary OCRR technology yields a frameset that is free of flex while absorbing vibration effortlessly. Every tube of the PHX is thin, deep and aero...from the head tube to the seat stays. The top tube is vertically deep for added stiffness. Horizontally the top tube is very thin to avoid knee knock. The PHX has not some, but ALL of the following: Horizontal drop outs for easy wheel loading, replaceable rear derailleur hanger, dual water bottle mounts, full internal cable routing, and all carbon V-1 360 g aero fork. The Valdora PHX does not utilize a proprietary aero seat post. It simply requires a standard 27.2 mm post. There are so many great seatposts out there intended for different situations / uses.