2023 Yamaha YZ450F Bike


Yamaha YZ450F Bike
Model Year
Engine Size
Engine Type
Engine Displacement
Bore x Stroke
97.0 mm × 60.8 mm
Compression Ratio
Fuel System
Mikuni fuel injection, ultra-compact 44mm throttle body, high-pressure electric fuel pump, new lightweight throttle cable
Electric starter with compact-motor and high-capacity ultra-lightweight four-cell lithium-ion battery
5-speed, tri-shaft layout; compact lightweight multiplate wet clutch; quick-adjust clutch perch
Final Drive
Suspension Front
KYB coil spring-type fork with speed sensitive damping, fully adjustable, tool-less compression clickers for easy damping adjustment, 309.9 mm (12.2") travel
Suspension Rear
KYB single shock, fully adjustable, revised internal valving and damping characteristics, 315 mm (12.4") travel via linkage-type rear suspension
Brakes Front
Hydraulic disc, Nissin caliper, 270 mm rotor
Brakes Rear
Hydraulic disc, reduced brake hose rigidity provides wider range of control at the pedal, 240 mm rotor
Tires Front
Dunlop Geomax MX33F, 80/100-21"
Tires Rear
Dunlop Geomax MX33, 120/80-19"
Overall Length
2179 mm (85.8")
Overall Width
826 mm (32.5")
Overall Height
1275 mm (50.2")
Seat Height
965 mm (38.0")
1481 mm (58.3")
Ground Clearance
351 mm (13.8")
26.9° / 4.7"
Fuel Capacity
6.1 liters (1.6 gallons)
Curb Weight
108.9 kg (240 lbs) with full fuel tank
• New 450cc Four-Stroke Engine: completely redesigned 450cc liquid-cooled DOHC four-stroke engine is lighter, more compact and features stronger pulling power across the entire rev range; rev limit is also increased by 500 rpm for longer over-rev while still maintaining the YZ450F's broad power character; new exhaust and intake port shapes, larger diameter titanium intake valves; new piston, cylinder, crankshaft and balancer assembly; and a switch from wet sump to dry sump lubrication
• All-New Aluminum Bilateral Beam Frame provides just the right amount of strength and flex for the perfect balance of stability and cornering performance; the result is a better handling machine with lighter feel, more agility and increased traction allowing the rider to enter corners with greater confidence and more line choices
• New Five-Speed Transmission: tri-shaft transmission layout vertically stacks the transmission shafts, raising the center shaft and forming a triangle between the crank, drive shaft and main shaft for a lighter, more compact transmission
• New Compact Lightweight Clutch: replaces the coil springs of the previous model with a new disc spring and integrates primary gear and basket into a single steel unit; the result is a more compact, lightweight and durable assembly which yields smoother engagement and excellent feel, while a new clutch cover employs a stylish geometric design that helps minimize scratching
• New Air Intake: optimized intake path draws air from under the side covers and seat allowing for a lighter, slimmer and more compact shroud area; redesign allows the airbox cover to be lower and more narrow and radiator shrouds to be slimmer
• New YZ450F-specific chain guide
• New Yamaha Power Tuner App: extensively updated, retaining the full functionality of the previous version but now even easier to understand, easier to use, with more functionality; puts the flexibility and precision tunability of the GYTR Power Tuner into your smartphone; adjust air/fuel mixture and ignition timing to tune engine performance for track conditions; record race log information and monitor a range of data such as maintenance and system diagnosis, engine run time and more; engine mapping can now be made using an intuitive new "Simple Tuning" slide bar; there is also a new lap timer, Traction and Launch Control tuning, and engine and suspension tuning guides bike set-up guides; wireless connectivity to the bike’s onboard CAN-bus network
• New lightweight handlebar-mounted switchgear allows on-the-fly selection of preloaded engine maps
• New Traction Control communicates wheel slip to the ECU, tuning the engine to maintain ideal rear wheel traction; three levels can be selected: HIGH, LOW or OFF; controlled through the Yamaha Power Tuner App
• Updated Launch Control now features an rpm limiter which can be adjusted in 500 rpm increments between 6,000 rpm and 11,000 rpm for optimized launches when the gate drops; controlled through the Yamaha Power Tuner App

Slimmer Body and Improved Ergos:
• New slimmer, flatter and more compact body eases rider movement for improved control, including more seamless, rounded features from seat edges and side covers to a more narrow fuel tank and front shroud
• Rider triangle is also improved with increased legroom between the seat and footpegs
• Revised handlebar position for a more natural posture and enhanced rider comfort
• Cooling: liquid
• Engine: DOHC, 4 titanium valves
• Handlebar: 1 1/8" aluminum tapered; four-position adjustable handlebar clamp is rubber-mounted for comfort, reduced handlebar vibration and easily tunable bar position; new compact PVC handlebar pad
• Rear wheel: three-cross spoke pattern
• 30 day limited factory warranty
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