cross evolution

even a traditional sport like 'cross has evolved over the years. check out these 3 pics. did these guys LeMans start and hop on right away? that could be an interesting start to a race. then below that is the USGP Boulder Cup a few wknds ago. and a close-up of Kabush's bike. nowadays cross frames are very specific, using carbon almost as much as road frames. and the wheels, tires and brakes are just freakin amazingly tech. people still piece together bikes from left over parts from 5-10 years ago, but not as often as in the past.