Type 998cc, liquid-cooled 4-stroke DOHC 16 valves (titanium valves)
Bore x Stroke 78.0mm X 52.2mm
Compression Ratio 12.7:1
Carburetion Fuel Injection with YCC-T and YCC-I
Ignition TCI: Transistor Controlled Ignition
Transmission 6-speed w/multi-plate slipper clutch
Final Drive #530 O-ring chain
source : http://www.yamaha-motorcycles.org/09/2009YZF-R1.php