THE ALL NEW SPECIALIZED STUMPJUMPER
The ultimate trail bike.
THE NEW BENCHMARK IN TRAIL BIKES
All-New Sidearm Frame
Specialized pulled out all the stops to lighten and stiffen up the frame, and arrived at a vastly more efficient structure with a new sidearm design. The sidearm design directly connects all three mounting points of the rear-end and shock to the frame, and this creates a significant increase in both stiffness and performance over bumps. More explicitly, frame flex has been minimized when the rear suspension is active. At the end of all of this, they've created one of the lightest trail frames on the market.