1999 Specialized Rockhopper FS Nitanium 15″ ‘brushed steel’

ALL ORIGINAL, awesome 15″ Ritchey Logic Nitanium frame (CroMoly steel with Niobium and Titanium), best for 4’8”-5’3” riders. Shimano 27-speed drivetrain, lightweight, RockShox front shocks, grippy mountain tires. 

Note that the threads on this original set of tires are not identical. In the late 1990s, the mountain bike industry decided that the front and rear tires serve completely different jobs and produced front-specific and rear-specific tread combinations. The design philosophy aimed to separate steering control from propulsion power. The Front Tire is the steering mechanism. Its tread design featured vertical knobs or continuous center ribs to act like rudders in the dirt. The Rear Tire handles climbing traction and drive power. Its tread design featured horizontal paddle-like knobs that bite into terrain to maximize forward propulsion.