the white is a Yamaha dt 50cc now s 45mm x 43mm, red is a Zundapp XF 25 another 50cc ai sta running with a small 125cc changed is a 50cc sachs fuego changed about the 110cc ... that is black is a yamaha tzr 50cc engine tzr 125cc to 200cc
my mechanic was the 1980 and 1982 nacional motocross champion but e have a accident in a race and became paraplegico...is all life is work in bikes is the best in portugal e can ride the bikes that he prepare but the bikes go off the mechanic shop almost ready to rock only by earing the engine working