Rick Carmichael's 2001 KX250, from RACER Magazine (Jap)

Honda RC250M - 1981, from the "MXWorksBike.com" VMX website

An amazing collection of works and title winning vintage motocross bikes from the era when every season bought radical changes, and the the makes were radically different from each other.
The RC250 shows well how the manufacturers were grappling with new design, and air cooled engines were still dominant.
This extraordinary collection belongs to Terry Good of Chicago - Tons of pics and great informaton including current 'historics' events. Put aside a lazy hour before you visit.....
Here's the link: http://www.mxworksbike.com/