Could they make use of tune-ups? Most likely, yes, but these bikes are totally functional and we had been using them to ride up till yesterday, when I decided to update and buy some new cruiser design bikes for us. I am guessing these are someplace around mid to late 90s models. Both have more recent cushy gel / memory foam style seats, with the guys's bike having the extra wide variation. The guys's bike has the extended "manage bar ends" on as seen in the image, which I simply put and purchased on 2 days earlier. They can easily be taken off, and the standard rubber handle grips put back on. , if you have any concerns or would like any extra pics simply ask.. $125 for the pair.