There are not many raceable steel frames left out there, and the de Rosa Corum is one of them. For just a few grams more than your standard carbon racing bike, you get a buttery smooth ride that only steel provides: outstanding vibration dampening without the dead feel of most carbon and aluminum frames. The bottom bracket is super stiff, even for a 6ft, 180lbs rider. The frame is very lively and responsive, making it an all-star climber and sprinter. For steel lovers who don't want to compromise performance for confort, this is the bike for you.