Engine Type 686cc liquid-cooled SOHC 4-stroke; 4 valves Bore x Stroke 102.0mm x 84.0mm Compression Ratio Fuel Delivery Ignition Transmission Final Drive 10.0:1 Yamaha Fuel Injection (YFI), 44mm TCI: Transistor Controlled Ignition 5-speed w/reverse; wet multiplate clutch X-ring chain; 2WD Fuel Capacity 2.9 gal CHASSIS Suspension/Front Independent double wishbone and 5-way preload adjustment, 9.l-in travel Suspension/Rear Cast aluminum swingarm with preload adjustable shock, 10.1-in travel