Carbon frame, carbon wheels & carbon seatpost specd for a lightweight performance ride the isospeed decoupler makes it ride smoother than any other hardtail, so your body doesnt get beaten up by trail chatter so much to love about the bontrager kovee elite 23 carbon wheels theyre carbon, theyre fast & they have super-quick engagement with a 54-tooth rapid drive rear hub the solid XC parts group will hold its own on the race course, but its also going to hold up through everyday training rides