Are the plastics more of a red-orange color on that 185, and yellow decals on tank? I think the 185 was only made in 80? Then from there out it was the 185s (smaller version compared to the full size 185 of the early year, and the last year 185s in 83 had front suspension) I have seen these from time to time, but they are deffinatly harder to find than the 81-83s.
THE 80's RAGE! Currently owns:
81, 85 Yamaha Tri Moto 125
83 Yamaha Tri Moto 200 x2
82,83 Yamaha Tri Moto 175 project
85 Yamaha Tri Z 250
84 Kawasaki Tecate 250
84 Honda ATC 70
85 Honda ATC 350X
84 Honda ATC 250R
(2) 84 Honda ATC 200x
82, 83 Honda ATC 185s
81 ATC 200
Lots of other parts and bikes