At the heart of the 2004 Yamaha YZF-R1 sport motorcycle, Yamaha utilizes a 998 cc (60.9 cu in) liquid-cooled in-line four, four-stroke layout. In factory specification, peak output is rated at 180 HP (131.4 kW) at 10,500 rpm while maximum torque reaches 110.1 Nm (81.2 lb-ft) at 10,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 180.4 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the YZF-R1 measures 172 kg (379 lbs) dry, translating to a power-to-weight ratio of 1.05 HP/kg (0.96 kg per horsepower). Rider ergonomics and chassis geometry center around a 835 mm (32.9 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,395 mm (54.9 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Yamaha archive, this model family spans 26 indexed model years from 1999 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
180.4 HP/L
Power-to-Weight
1.05 HP/kg (0.96 kg/HP)
Standover Height
835 mm (32.9 in)
Engine
Displacement998.0 ccm (60.90 cubic inches)
Engine TypeIn-line four, four-stroke
Engine DetailsIn-line four, four-stroke
Power180.0 HP (131.4 kW)) @ 10500 RPM
Torque110.1 Nm (11.2 kgf-m or 81.2 ft.lbs) @ 10500 RPM
Compression12.3:1
Bore x Stroke77.0 x 53.6 mm (3.0 x 2.1 inches)
Valves/Cylinder5
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic fork, diameter 43mm
Front Travel120 mm (4.7 inches)
Rear SuspensionSwingarm (Link suspension)
Rear Travel135 mm (5.3 inches)
Wheelbase1395 mm (54.9 inches)
Ground Clearance135 mm (5.3 inches)
Wheels & Brakes
Front Tyre120/70-ZR17
Rear Tyre190/50-ZR17
Front BrakesDouble disc
Front Brake Ø320 mm (12.6 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight172.0 kg (379.2 pounds)
Power/Weight1.0465 HP/kg
Seat Height835 mm (32.9 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
