The all-new Yamaha YZF-R1 has been designed to deliver outstanding handling together with a class-leading power output, making it the most balanced one-litre supersport machine in the category. Producing 180HP with air induction and weighing just 172KG, the new third-generation YZF-R1 is the first production motorcycle to smash the power to weight ratio of 1:1.

• Engine type 4-stroke, forward inclined parallel 4-cylinder, liquid cooled, DOHC, 20 valves  
• Intake system Fuel injection, motor-driven secondary throttle valves  
• Displacement 998cc  
• Bore x stroke 77.0 x 53.6 mm  
• Compression ratio 12.3:1  
• Maximum power 132 kW (180 HP) @ 10.500rpm with direct air induction 126.4 kW (172 HP) @ 12,500 rpm without direct air induction  
• Maximum torque 110.1 Nm (11.2kg-m) @ 10,500 rpm with direct air induction 106.6 Nm (10.9kg-m) @ 10,500 rpm without direct air induction  
• Ignition system CDI  
• Starter system Electric  
• Fuel tank capacity 18 litres  
• Transmission system Constant mesh, 6 speed  
• Clutch type Wet, multiplate disc  

Following the major technical changes introduced for 2003, the YZF-R6 has proved to be a leader on the road and a winner on the racetrack. For 2004 this leading middleweight supersport features a number of minor technical changes, and is available in a range of new colours.

• Engine type Liquid-cooled, DOHC, 16 valve  
• Displacement 600cc  
• Bore x stroke 65.5mm x 44.5mm  
• Compression ratio 12.4:1  
• Maximum power With direct air induction: 90.5 kW (123HP) @ 13,000 rpm / Without direct air induction: 86.0 kW (117HP) @ 13,000 rpm  
• Maximum torque With direct air induction: 68.5Nm (6.99kg-m) @ 12,000 rpm / Without direct air induction: 66.4Nm (6.78kg-m) @ 12,000 rpm