If your idea of trail riding follows the philosophy of go big or go home you simply cant beat the agility and responsiveness that a 650b provides then the stumpjumper fsr expert carbon 650b should be on your list it features sram one by group set and the frame is constructed from fact 9m carbon fibre with an m5 alloy rear end the carbon molding process also allowed specialized to revolutionize how you carry your trail essentials with the all new swat door this compartment will fit a tube