Type 686cc liquid-cooled w-fan, 4-stroke; SOHC, 4 valves , Bore x Stroke 102.0mm x 84.0mm , Compression Ratio 9.2:1 , Fuel Delivery Yamaha Fuel Injection (YFI) , 44mm , Ignition 16-Bit ECU , Starting System Electric , Transmission 5-speed w-reverse; wet multiplate clutch , Drive Train 2WD; sealed O-ring chain, eccentric adjustment , , Chassis , Suspension - Front Independent double wishbone w-piggyback High--Lo-speed compression, rebound and threaded preload adjustment, 9.1-in travel , Suspension - Rear Cast aluminum swing arm w-rebound, High--Lo-speed compression and threaded preload adjustment, 10.1-in travel , Brakes - Front Dual ventilated hydraulic disc, twin piston , Brakes - Rear Ventilated hydraulic disc, twin piston , Tires - Front AT21 x 7-10 , Tires - Rear AT20 x 10-9 , , Dimensions , L x W x H 72.6 x 45.5 x 43.9 in , Seat Height 32.7 in , Wheelbase 50.4 in , Ground Clearance 4.4 in , Fuel Capacity 2.9 gal , Wet Weight 422 lb , , Other , Lighting Dual 30W Krypton multireflector headlights And 3.9-0.5W LED brakelight