If you know the history of the stumpjumper fsr you know that it doesnt believe in compromising not surprisingly this still rings true today with the stumpjumper fsr carbon 650b frames youll find the fact 9m carbon fibre that creates a lightweight strong and stiff construction the carbon moulding process also allowed specialized to revolutionise how you carry your trail essentials with the all new swat door found at the down tube this compartment will fit a tube a tool and pump withou