This bike is made with carbon tubes and and Easton carbon stays. Carbon steerer tube. The front seat tube is the only aluminum tube and is Columbus butted. The 3 handlebars are carbon, joined with Profile aero bar clamps. Crank, cluster, and derailers- DuraAce 7800. Shifters- Shimano 10 speed rapidfire. Brake levers- Tektro carbon. Brakes- Cane Creek single pivot titanium with Nokon aluminum cable housing. Seats and posts- SDG. Titanium leverless wheel skewers. KMC hollow pin slotted super light 10 speed chain. Almost all bolts replaced with aluminum, and a few titanium. SRP aluminum derailer pivot bolt. Weight with pedals is 20.5 lbs.