Custom Rock Lobster medium-sized scandium frame by Paul Sadoff (http://rocklobstercycles.com/). Paul build this for me in 2006 when I was doing cross country racing. It's 24 lbs now, but could be built lighter with modern parts. Hand-built Chris King wheelset,FSA carbon cranks, Fox F80X fork, SRAM X0 derailleur, various scuff marks for mountain bike riding.