1999 Trek 5000, purchased new in 2000, no idea how many miles-- somewhere upward of 80K. I did have to get the derailleur hanger replaced (the aluminum bent and the threads tore out, and it's not a replaceable hanger), but the carbon was undamaged. Still have to put it all back together. It looks beat up enough that I was afraid Trek would refuse to send it back. Pretty much every component on it has been replaced at least once except the bars and front derailleur. Most parts several times. The original cranks have measureable shoe wear on them (I had an SRM on it when I broke the hanger).