The 1993 Balance ST540 is a 21 pound a triathlon/road bike with a steel Tange Infinity frame. The ST540 is a is a lighter bike at around 20 pounds. It was released in 1993 and costs $749 brand new. The ST540 is fully rigid.
The ST540 comes with Shimano components, including a chromoly SR stem.
The ST540 has 7 speeds and has a Shimano derailleur.
It comes with tires (622mm x 25mm) and Araya RM-430 rims.