Hopefully someone can help me with my new projects: I just picked up two Penton 250's (I think). Bike #1 has frame# 54-501-80700 and motor# 5406040. Bike #2 has frame# 550-00434 and motor# 3-5402485. What years are these bikes? How can I tell in the future? Both are currently in enduro trim, but I want to make them vintage MX'ers. Question #2: Do these bikes come with different gear ratios, or all the same? I don't want to have a wide-ratio gear box on an MX course.
In advance, thanks for any help I can get!
Mick Milakovic
If not mistaken, The first is a 1974 and the second is a 75.
Cher'o,
Dwight
7 time ISDT / E medalist
7 time National Enduro Class Champion.