Full suspension bike downhill mountain bike type mens model 2015 series kona operator frame material carbon frame characteristics internal cable routing bike frame sizes cm 39 42 45 cm headset fsa orbit 15 zs suspension fork technology postmount shock absorber rock shox vivid coil shock absorber travel 200 mm gear system with derailleur number of gears 7 rear derailleur sram x01 derailleur model sram x01 chain guide ethirteen srs gear shift