I am the proud owner of a 1985 KX125 D1 that was purchased for me , at the age of 15, off the showroom floor! I raced it at Dade City Racetrack in Florida in the 80''s. After a pretty successful military career, I totally rebuilt her and she runs better than new. I would like to hear what parts others have improved upon from different years. Hope to hear from everyone soon!!