If your idea of trail riding follows the philosophy of "go big or go home," you simply can't beat the agility and responsiveness that a 650b provides. Knowing this, Specialized built the 2016 Specialized Stumpjumper FSR Expert 650B to be the ultimate all-rounder trail bike. It features SRAM's workhorse one-by groupset, X1, and Shimano's dependable, no-holds-barred XT hydraulic disc brakes to round out a build that places an equal focus on durability and efficiency.