The components match what Bikepedia lists for a 1995 RockHopper 24.


It's a really small bike. if you're 5'7" it probably doesn't "fit" you in the sense that it's the best size for your body dimensions. You might be able to ride it without unreasonable discomfort, but that's something different. But if you like the way it feels, don't let the fact that it was originally marketed as a kid's bike put you off. That just means it's really small.


What needs to be tuned up in your view? You could do as little as oiling the chain and putting air in the tires if the shifting works OK. That wouldn't cost you anything. Minor shifting problems can also be fixed for the cost of your time. If the shift and brake cables need to be replaced, that would cost around $20 (cheaper if you don't mind flexy cables). You might want new brakes pads for a bike that age, which could be another $20 or so.