2006 Yamaha WR 450 F Technical Analysis & Specification Breakdown
Built around Yamaha's enduro - offroad motorcycle platform, the 2006 Yamaha WR 450 F features a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 58 HP (42.3 kW) at 9,000 rpm while maximum torque reaches 49 Nm (36.1 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 129.2 HP per liter and a 2,000 rpm working window between peak torque (7,000 rpm) and peak power (9,000 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the WR 450 F measures 122 kg (269 lbs) wet (curb), translating to a power-to-weight ratio of 0.48 HP/kg (2.1 kg per horsepower). Rider ergonomics and chassis geometry center around a 998 mm (39.3 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,485 mm (58.5 in) wheelbase engineered for balanced agility and highway composure. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 4 indexed model years from 2004 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
129.2 HP/L
Power-to-Weight
0.48 HP/kg (2.1 kg/HP)
Power Band Window
7,000–9,000 rpm
Standover Height
998 mm (39.3 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power58.0 HP (42.3 kW)) @ 9000 RPM
Torque49.0 Nm (5.0 kgf-m or 36.1 ft.lbs) @ 7000 RPM
Compression12.5:1
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital CDI
LubricationWet sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multiple disc
Driveline´O´ ring Chain
Chassis
Frame TypeSingle cradle, steel
Front SuspensionInverted telescopic fork, Kayaba
Front Travel300 mm (11.8 inches)
Rear SuspensionSwingarm (linked type suspension), Kayable single shock
Rear Travel315 mm (12.4 inches)
Wheelbase1485 mm (58.5 inches)
Ground Clearance371 mm (14.6 inches)
Wheels & Brakes
Front Tyre90/90-R21
Rear Tyre130/90-R18
Front BrakesSingle disc. Four-piston calipers.
Front Brake Ø250 mm (9.8 inches)
Rear BrakesSingle disc. Two-piston calipers.
Rear Brake Ø245 mm (9.6 inches)
Dimensions & Weight
Dry Weight112.5 kg (248.0 pounds)
Weight incl.122.0 kg (269.0 pounds)
Power/Weight0.5156 HP/kg
Seat Height998 mm (39.3 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.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
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.
