t2p: I have a Y22. In the mid to late 90's they had Y3,Y5,Y11,Y22 and Y33. The Y3,5 had Aluminum frames and the 11,22,33 are carbon fiber. I've added Icon headset and set post etc. Also a "Strada Pro" Lockout rear shock and it makes it nice for street riding,then with a flip of the lever once you hit the trails. They also had others like Y-SL and the Y-Foil road bike is bad azzzz looking bike..And yes I remember seeing a Y -50. It's like the "Maui" Limited edition, nice Hawaii style decal on it...