The CLX features hidden ribs on the inside of the top & down tubes to increase lateral stiffness without sacrificing ride quality. The CLX also makes use of the same chainstay design found on the top-end EPS.
The CLX is a compact-style frame with an impressive span of sizes—from a 42cm (the 51cm top tube equals a roughly 46cm traditional frame size) all the way up to a 59cm with a rangy 59.5cm top tube (a 63cm in standard frame sizing).
You can see all of colnago's bike at
www.colnago.com