2025 Yamaha YZ450F Monster Energy Technical Analysis & Specification Breakdown
At the heart of the 2025 Yamaha YZ450F Monster Energy cross - motocross motorcycle, Yamaha relies on a 450 cc (27.5 cu in) liquid-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 97.0 x 60.8 mm (3.8 x 2.4 inches) with a 13.0:1 compression ratio.
On the scales, the YZ450F Monster Energy measures 108.9 kg (240 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 965 mm (38 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,481 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 6.06-liter (1.6 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 2021 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
965 mm (38 in)
Engine
Displacement450.0 ccm (27.46 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsTitanium-valves
Compression13.0:1
Bore x Stroke97.0 x 60.8 mm (3.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection. Mikuni, 44mm
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCI: Transistor Controlled Ignition
LubricationWet sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchMultiplate, wet
Chassis
Frame TypeBilateral beam, aluminum
Rake26.9°
Trail119 mm (4.7 inches)
Front SuspensionKYB® spring-type fork with speed sensitive damping; fully adjustable
Front Travel310 mm (12.2 inches)
Rear SuspensionKYB® single shock; fully adjustable
Rear Travel315 mm (12.4 inches)
Wheelbase1481 mm (58.3 inches)
Ground Clearance351 mm (13.8 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre120/80-19
Front BrakesSingle disc. Hydraulic.
Front Brake Ø270 mm (10.6 inches)
Rear BrakesSingle disc. Hydraulic.
Rear Brake Ø240 mm (9.4 inches)
WheelsDunlop Geomax MX33 tires
Dimensions & Weight
Weight incl.108.9 kg (240.0 pounds)
Seat Height965 mm (38.0 inches) If adjustable, lowest setting.
Overall Height1275 mm (50.2 inches)
Overall Length2179 mm (85.8 inches)
Overall Width831 mm (32.7 inches)
Fuel Capacity6.06 litres (1.60 US gallons)
Oil Capacity1.00 litres (1.06 US quarts)
Other
StarterElectric
Color OptionsYamaha Blue/green/white
Warranty30 Day Limited Factory Warranty
Notes
Traction control. Three power modes. Power tuner app.
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.
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.
