2004 Yamaha YZ 450 F Technical Analysis & Specification Breakdown
At the heart of the 2004 Yamaha YZ 450 F cross - motocross motorcycle, Yamaha pairs a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 95.0 x 63.4 mm (3.7 x 2.5 inches) with a 12.5:1 compression ratio.
On the scales, the YZ 450 F measures 97 kg (214 lbs) dry. Rider ergonomics and chassis geometry center around a 995 mm (39.2 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 7-liter (1.8 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.
Standover Height
995 mm (39.2 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, two-stroke
Compression12.5:1
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Valves/Cylinder5
Fuel SystemCarburettor
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
Gearbox4-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic fork
Front Travel300 mm (11.8 inches)
Rear SuspensionSwingarm (linked type monocross)
Rear Travel315 mm (12.4 inches)
Wheelbase1485 mm (58.5 inches)
Ground Clearance371 mm (14.6 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre110/90-19
Front BrakesSingle disc
Front Brake Ø250 mm (9.8 inches)
Rear BrakesSingle disc
Rear Brake Ø245 mm (9.6 inches)
Dimensions & Weight
Dry Weight97.0 kg (213.8 pounds)
Seat Height995 mm (39.2 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.
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.
