The 1989 Cannondale 3.0 is a fantastic example of 80's and 90's rigid fork MTB goodness. It also weighs less than any other high-performance frames from it's era, about 3 pounds. The 3.0 also offers a unique combination of quickness and stability, along with the same reassuring stiffness Cannondales of the time were known for. Frame measurements are 56cm seat tube, 59 cm top tube, and a standover height of 31 inches.
Cannondale 3.0 series MTB