In reply to the weegy: I've got a Izoard, the one before the XP which is a bit lighter as it has a carbon steerer as opposed to alloy. It has the carbon centuar GS. I had a Giant TCR with Ultegra and ksyrium sl wheels, good bike but my Wilier is a far better bike. Can't fault it...I'm doing the raid Pyrenean on it in June.