This bike is a custom build with full 12-speed Shimano Ultegra Di2 and Ultegra C50 carbon wheels. The cassette is Dura-Ace because it is the biggest weight savings. It has a carbon handlebar, stem, and Seatpost. It has GP5000s setup tubeless with Fillmore valves. This bike is in excellent condition with no blemishes on the frame. The right shifter has a scuff, but it is smooth to the touch. The chain measures new, the brake pads and rotors were replaced recently, and the tires and bar tape were also replaced recently. The bearings all spin smoothly and were freshly greased. This bike was main...