Suzuki's PE (Pure Enduro) models. The model pictured is I believe a 1982 when IMHO the graphics started getting very good. As to history, when Suzuki finally decided to sell an Enduro Ready bike their PE250 in 1977, I was really excited. This was a great start for the Japanese.
Next year in 1978 they brought out the PE175 and at the time, I was working as District Sales Manager for US Suzuki in Southern Ohio. I quickly bought one from one of my dealers. It handled great, but power was definitely down from competition. The first thing you had to do was cut the exhaust pipe in half and get rid of the internal baffle. That helped but the Huskys could still smoke you! I loved it anyway.