What KDX do I have?

[Pat_Roberts]

Just picked up what I believe to be a 1980 kdx250. The frame has the A after the 250. I’m wondering if it’s a 79? I’m new to these bikes and can’t figure out online what it is, because people often have the wrong info. It has twin rear shocks. And a LEFT side exit for the exhaust. Did they make these air cooled bike in the year 1979, or they start 1980? Is 1980 left or right side exit exhaust?

[SS109]

Post up the frame number and our resident guru should be able to decipher it for you.

[Pat_Roberts]

I don’t know how to send a picture. But the number is KDX250A-502623

[KDXGarage]

Welcome to kdxrider.net.

It is a 1980 model. 1980 KDX250 was the only year KDX250 with twin shocks. The only 1979 model KDX was the KDX400.

I think this is how it went.

1980 KDX250-A1
1981 KDX250-B1
1982 KDX250-B2
1983 KDX250-B3
1984 KDX250-B4

Parts Diagrams:

https://www.partzilla.com/catalog/kawas ... -kdx250-a1

They didn't make a KDX250 in the USA from 1985 - 1990. 1980 - 1984 were air cooled. 1991 - 1994 were liquid cooled. 1989 was the first year for a liquid cooled KDX, the KDX200.