This weeks collection comes to us from Tim in CA.
These are my CZ400's that I have put together and restored to compete around the country in the AHRMA Vintage Motocross Nationals +50 Expert class. The one with the porcupine head is a 1972 and the one with the radial head is a 1973. Both use a 1973 CZ frame. I wouldn't have been able to build such quality racers without the help of Charlie Richardson of CR High Performance Products in Fallbrook, CA.