The specialized stumpjumper fsr comp carbon 6fattie 275 mountain bike 2016 features the all new 6fattie wheel system that takes 650b wheels and wraps them in 30 tyres the result levels of traction control and floatation that will shake your idea of trail riding to the core and to set things over the top we designed it to work seamlessly with the revolutionary new stumpjumper fsr frame the bulk of the mountain bikes frame is constructed from fact 9m carbon fibre in order to provide