2020 Yamaha YZ450F Guide

2020 Yamaha YZ450F

2020 Yamaha YZ450F 2020 Yamaha YZ450F 2020 Yamaha YZ450F


2020 Yamaha YZ450F:

Class leading performance and suspension along with the smartphone power tuner app make this the bike of choice for race winners.

Lighter. More powerful. Better-handling. To meet these essential targets, the 2020 YZ450F was examined under a microscope. An ultra-compact motor was developed, housed in the latest evolution of Yamaha’s aluminum bilateral beam frame. Chassis components and suspension settings were carefully refined for excellent handling feel, and weight was shaved everywhere, from the footrests to the electrical system.

Less weight, more power and sharper handling: The new YZ450F raises the bar in every way. Which makes it the clear choice for every racer who demands winning performance combined with total control.

Tune in to victory.
The all-new engine comes with a lighter cylinder that maximises the winning potential of the high compression head, forged piston and aggressive cam profiles. And the YZ450F’s digital Power Tuner lets you make instant trackside engine mapping adjustments and gain a real advantage in all riding conditions.

Its new aluminium bilateral frame comes with thicker down tubes and thinner main spars for reduced weight and sharper handling – while the industry-leading coil spring-type forks and linkage rear suspension deliver exceptional balance.

The YZ450F’s distinct rearward-slanted cylinder design is now even lighter and more compact than before, ideally positioned in the frame for optimized weight distribution. Several internal engine upgrades for 2020 contribute to an ideal balance of open-class power and exceptional controllability.

The compact bilateral beam frame is further refined for 2020, featuring thinner main spars, thicker down tubes and all-new motor mounts that work together to shed weight and boost handling feel at the limit. One of the sharpest-handling machines in the class just got sharper.

The groundbreaking Power Tuner app makes it easy to modify fuel mapping directly from your Smartphone based on riding conditions. You can also record race log information, monitor a range of data and share settings with teammates or friends. Easy to operate and free to download, the Power Tuner app uses onboard Wi-Fi to communicate with the bike’s CCU, allowing you to tune like never before.



2020 Yamaha YZ450F Totalmotorcycle.com Key Features

NEW FOR 2020

  • Lighter, more compact engine
  • New high-compression, brodge-box piston design with DLC-coated piston pin
  • Handlebar-mounted map selector switch
  • Enhanced radiators
  • Updated, more durable clutch
  • Shorter, more direct shift stroke
  • Thinner main chassis spars, thicker down tubes
  • New motor mounts
  • Optimized suspension for updated frame
  • Lighter, refined wheels
  • Wider, lighter footpegs


  • Wireless smartphone-based Power Tuner app
  • Revolutionary reversed engine design with front-mounted FI system and rear-exiting exhaust
  • Mass centralizing rearward-slanted cylinder helps keeps weight centred in the chassis
  • Electric starting and lithium ion battery
  • Launch Control System
  • Compact aluminum bilateral beam frame and aluminum swingarm
  • Industry-leading, race-ready, fully adjustable suspension
  • Handlebar-mounted fuel map selector switch

Yamaha Announces Full Lineup of 2020 Motocross Bikes

Enter the victorYZone with Yamaha’s Newly Redesigned YZ450F

MARIETTA, Ga. – June 4, 2019 – Yamaha Motor Corp., USA, introduces its complete lineup of race-ready 2020 motocross bikes, including the newly redesigned YZ450F, featuring a new engine, frame, and host of other features to deliver a lighter, more powerful, and better handling motocross experience.

“The 2020 YZ450F features design changes which resulted in a lighter, faster, and more nimble handling machine that will once again raise the bar in the 450 class,” said Steve Nessl, Yamaha’s motorsports marketing manager. “Yamaha’s 2020 lineup of four-stroke motocross bikes boasts the most advanced, race-ready machines of their respective classes.”

Also returning for 2020 is the championship-winning Yamaha YZ250F four-stroke motocross bike, along with Yamaha’s legendary two-stroke lineup featuring the YZ250, YZ125, YZ85 and YZ65.

Welcome to the victorYZone
Yamaha off-road competition bikes offer the very latest technology and performance features designed to make enthusiasts the best riders possible, win races and help riders become one with their machine – putting them in the zone and atop the podium.

New 2020 YZ450F: Tune in to Victory
The new 2020 Yamaha YZ450F has been redesigned to provide a lighter, more powerful, and better handling motocross experience. The new 449cc, liquid-cooled, four-stroke, electric start engine features an all-new compact cylinder head with redesigned combustion chamber shape, steeper valve angles and more aggressive cam profiles. The reward-slanted cylinder houses a higher compression piston with low friction rings attached to a longer connecting rod. The transmission has been refined to provide smoother shifting, and a more efficient crank breather system has been adopted to decrease pumping losses. In all, the lighter, more compact engine produces increased power across the entire RPM range for stronger and more linear pulling power.

The new motor is housed in the latest evolution of Yamaha’s lightweight aluminum bilateral beam frame, which has been redesigned with all-new flex characteristics and provides improved cornering performance, traction and bump reaction to give the rider more confidence to push harder. Other chassis components such as engine mounts, top triple clamp and front axle, as well as the class-leading KYB® suspension with enhanced compression and rebound characteristics were carefully refined to reduce weight while improving handling and performance. To bring the new package to a stop, the 2020 YZ450F features a newly designed front brake caliper, brake pads and front and rear disc. The overall changes of the 2020 YZ450F deliver increased power output with more controllable linear acceleration and lightweight handling characteristics that mimic a YZ250F.

Featuring Yamaha’s advanced racing technology, the new 2020 YZ450F has been updated to give racers the edge right out of the gate. Standard equipment including electric start, a lightweight lithium battery, advanced fuel injection, and a wrap around rear-positioned exhaust deliver powerful and reliable performance while balancing weight for excellent mass-centralization. Racers can achieve quicker, smoother race starts through Yamaha’s Launch Control System, adjust their on-track performance using wireless connectivity through the Yamaha Power Tuner App right from their phone, and now choose between two user defined ECU maps on the fly through the handlebar mounted dual-mode engine map switch.

The new 2020 YZ450F will be available from dealers next month in Team Yamaha Blue and Gray for $9,299 MSRP.

2020 YZ250F: Tune, Race, Win
Last year, the 2019 YZ250F introduced all-new engine, frame, and bodywork designs with features never-before seen on a 250cc class motorcycle to deliver more mid-range and top-end power, and class-leading engine performance. Yamaha’s championship-winning design returns with the 2020 YZ250F.

Sporting an electric start, 250cc, liquid-cooled, four-stroke engine housed in an aluminum bilateral beam frame, and suspended by industry leading KYB spring type forks and KYB rear shock, the 2020 YZ250F provides the ultimate balance of race-winning performance, rideability and comfort. The motorcycle also continues to feature Yamaha’s advanced racing technology including dual-mode switchable engine mapping and wireless connectivity for the Yamaha Power Tuner App.

The 2020 YZ250F will be available from dealers this month in Team Yamaha Blue and Gray for $8,199 MSRP.

2020 YZ125 and YZ250
Yamaha’s YZ125 and YZ250 models return for 2020 to complete Yamaha’s full-size lineup of motocross bikes.  Lightweight aluminum frames, Yamaha’s patented Power Valve System (YPVS™), and reed-valve inducted engines provide an incredible power-to-weight ratio while maintaining Yamaha’s excellent reliability and durability. Both the YZ125 and YZ250 each sport industry leading KYB spring-type fork and KYB rear shock for unmatched comfort and performance on the track.

The 2020 YZ125 and YZ250 will begin arriving at Yamaha dealerships this month in Team Yamaha Blue for $6,499 and $7,399 MSRP, respectively.

2020 YZ85 and YZ65
Yamaha’s 2020 youth models, the YZ85 and YZ65, are ready to tackle the track with winning performance out of the gate. They are respectively powered by confidence-inspiring 85cc and 65cc two-stroke engines featuring YPVS for broad, tractable power across the rev range without losing peak power at high RPM — improving rideability and reducing the need for frequent shifting. Industry-leading 36mm KYB spring type forks and KYB rear shock are fully adjustable for compression and rebound, and contribute to class-leading handling and performance in a wide range of conditions. Four-way, adjustable handlebar positioning as well as lever reach adjustability are designed for ultimate rider comfort regardless of size. Finally, with two-stroke ease of maintenance and Yamaha’s proven durability, the 2020 YZ85 and YZ65 are built to keep kids on the track.

The 2020 YZ85 and YZ65 will both be available from dealers this month in Team Yamaha Blue for $4,599 MSRP.

Yamaha bLU cRU Off-Road Racing Contingency
All 2020 YZ models are once again eligible for Yamaha’s bLU cRU Off-Road Racing Contingency Program, with nearly $5 million for Yamaha bLU cRU riders competing in off-road motorcycle racing. YZ riders can earn contingency payouts via a bLU cRU debit card, receive a 10% rebate on GYTR parts and accessory purchases of up to $1,000, and receive an instant $45 credit




2020 Yamaha YZ450F Totalmotorcycle.com Features and Benefits


  • Reversed, liquid-cooled, 449 cc, DOHC, 4-valve (titanium), fuel injected, single-cylinder engine.
  • Electric starting.
    • super convenient electric starting means faster re-starts and significantly reduced rider fatigue
    • compact electric starter powered by a lightweight lithium ion battery
  • “Reversed” engine design (FI system is front mounted, exhaust exits from rear of cylinder).
    • FI throttle body and air box are front mounted, providing a straight intake path
    • straight shot intake path provides optimum fuel / air / exhaust flow for excellent power
    • front mounted intake keeps fuel cooler since engine heat has less effect on incoming fuel (cooler fuel is more dense and increases power)
  • Rearward-slanted, reversed cylinder design centralizes mass.
    • rearward slant moves a significant amount of rotating weight toward the centre of the chassis, centralizing mass for light, agile handling
  • 4-valve cylinder head features a 13.0:1 compression ratio.
    • compact combustion chamber provides optimum combustion speed while also reducing heat and power losses
    • 37 mm titanium intake valves and 30.5 mm titanium exhaust valves
    • 4-valve design offers optimum flow for excellent power and torque
  • Long-design electrode spark plug.
    • moves the spark plug tip deeper into the combustion chamber
    • spark plug cap holder helps prevent plug cap from being dislodged
  • High-lift intake and exhaust cams and valve springs.
    • intake and exhaust cam profiles and cam timing optimized for best power output
    • valve spring rates are optimized to reduce friction related power losses
  • Lightweight titanium valves.
    • titanium valves reduce weight and improve performance (titanium valves are 40-45% lighter than steel valves)
    • reduced valve weight improves valve train reliability and longevity
    • lower reciprocating weight allows for a higher rpm limit and better control of the valves
  • Automatic cam chain tensioner.
    • reduces maintenance and mechanical engine noise
    • special cam chain “sliders” reduce internal frictional losses
  • Lightweight, ceramic composite-plated “liner-less” aluminum cylinder.
    • reduced weight (no sleeve or heavy liner) plating is sprayed directly on the aluminum block
    • ceramic coating ensures faster, more uniform heat dissipation
    • ceramic coating enhances the thin film of oil between the cylinder and piston, reducing friction and increasing power
  • Cylinder is “offset” relative to the crankshaft (to exhaust side).
    • reduces frictional losses between piston and cylinder wall during the power stroke
  • Cylinder “cutaways” allow air “trapped” under the piston to enter a side chamber (or cutaway).
    • reduces horsepower-robbing “pumping losses”
  • Crankcase also utilizes special “cutaways”.
    • reduces horsepower-robbing “pumping losses”
    • crankcase cutaways match cylinder cutaways for maximum efficiency
  • Lightweight, short-skirt, forged aluminum piston and piston pin.
    • lightweight design means faster throttle response and reduced mechanical vibration for excellent durability
    • DLC (diamond-like coating) coating on piston pin and special coating on piston skirt reduces frictional losses
  • Piston oil cooler jet nozzle directs oil to the cylinder, rod and underside of piston.
    • reduces piston, cylinder and rod temperatures for excellent durability
  • Carburized connecting rod for excellent durability.
    • carburization is a type of heat treating that adds strength and hardness
  • Lightweight gear-driven balancer shaft.
    • reduces vibration for improved rider comfort and reduced rider fatigue
  • Heavy-duty clutch with quick-access magnesium outer cover and on-the-fly barrel adjuster.
    • quick-access outer cover provides fast and easy clutch access
    • light lever pull for reduced hand fatigue during a long moto
    • works-style, race-spec barrel adjuster for on-the-fly clutch lever free play adjustments.
  • 5-speed transmission with 2-bar, floating shift guide system and a 14 mm shift shaft.
    • 2nd, 3rd and 4th gears are wider to engine power
    • floating shift guide system provides smooth, positive shifts
    • 14 mm shift shaft provides good durability in the event of a crash
  • Lightweight, 44 mm Mikuni throttle body fuel injection system.
    • 12-hole injector maximizes fuel atomization for more complete combustion and excellent power delivery
    • FI benefits include automatic adjustments to insure the optimum fuel andmdash; air ratio regardless of outside air temperature and altitude
    • other benefits include excellent throttle response and starting
    • cold start knob (FID) also doubles as an idle adjuster
  • Smartphone-based, wire-less, “Power Tuner” app.
    • super convenient, smartphone based Power Tuner
    • no “hard” link required between the unit and smartphone… wireless signal via Wi-Fi
    • app is free and will work with either iOS or Android platforms
    • receiving communication control unit (CCU) is located under left side cover of bike
    • adjustment range includes 16 settings for both fuel injection duration and ignition timing
    • real-time machine monitoring function (engine rpm, throttle angle, battery voltage, coolant temp, intake air temp, outside air pressure, etc.)
    • new maintenance function allows user to track hours of use for scheduled maintenance
    • race log function is available to record and save settings from various tracks
    • tuning maps and race logs can be shared
  • Forward-mounted air box with revised washable, dual-stage foam air filter.
    • no tools required to access air filter
    • new air box cover with single quick-release fastener
    • revised, washable dual-stage air filter
  • Wet sump lubrication system.
    • reduces weight (no remote oil tank or oil lines)
    • eases maintenance (easier and faster oil changes)
    • oil volume is optimized to reduce oil related drag and weight
  • Easy-access “cartridge-type” oil filter for fast, easy oil changes.
    • single-core, dual radiators provide outstanding cooling efficiency
  • Maintenance-free transistor controlled ignition (TCI).
    • produces a strong spark for fast starts
    • provides precise ignition timing / mapping for optimum engine performance at any rpms
  • Lightweight, wrap-around exhaust system.
    • exhaust exits from the rear of the cylinder and circles cylinder body
    • header length optimized for “pulse effect” for excellent power delivery
    • centralizes mass by moving weight closer to the centre of the chassis
  • Lightweight, aluminum, re-packable muffler (aka silencer).
    • sound output is 94 dB meeting CMRC and AMA regulations
    • new rubber muffler-mounting system reduces vibration and improves durability
  • Launch Control System (LCS).
    • provides smoother, quicker starts with less wheel spin and front wheel lift
    • allows rider to concentrate on clutch control, body position and machine
    • system functions in 1st and 2nd gears only and is disabled when the bike is shifted into 3rd
    • ECU controls the system and adjusts engine rpm to limit wheel spin and wheelies
    • activation button is on the LHS handlebar and features a LED indicator light.
  • Special “G” sensor system.
    • shuts down fuel injection system if bike lies on its side for more than 10 seconds
    • helps prevent costly engine damage
    • no special procedure to re-start the bike… just hit the electric start button and go!


    • Compact, lightweight bilateral-beam aluminum frame.
      • new frame offers an optimum rigidity balance between strength, rigidity and tuned flex, while also providing excellent shock absorbing qualities
      • large upper frame bracing provides rigidity and durability
      • rear frame spars and tuned engine mounts centralize mass for balance of bump absorption, stiffness and rider feeling
    • Lightweight, tapered aluminum swingarm.
      • lightweight design reduces unsprung weight for optimum suspension performance
      • excellent rear wheel traction and control
      • 25 mm rear axle
    • Lightweight, detachable rear sub frame.
      • constructed of square-section, lightweight aluminum pipe with no bends
      • allows easier access when servicing rear suspension components
      • detachable design reduces costs in the event of a loop out

Lightweight, high-strength, tapered aluminum handlebar.

    • adjustable handlebar holders offer a total of 4 different handlebar positions with an adjustment range of 30 mm (1.2 in) suits a wide variety of rider sizes
      • handlebar holders are rubber-mounted for reduced vibration and improved rider comfort
    • 48 mm, adjustable, inverted, KYB “SSS” coil spring-type fork with 310 mm (12.2 in) of wheel travel.
      • speed-sensitive damping provides exceptional balance between handling and bump absorption
      • friction-reducing coating on inner tubes
      • compression and rebound damping adjustability
      • optional fork springs are available through GYPA
      • helps prevent aerated fork oil from entering the inner damper assembly and degrading its damping abilities
      • the inner damper is pressurized, eliminating bubbles forming in the oil
      • 22 mm front axle
      • Transfer Control Valve (TCV) offers more precise control throughout the full suspension stroke
      • TCV is located on the upside of the spring and its function is controlled by piston speed, not piston position, hence the term “Speed Sensitive System fork.”
    • Large wrap-around plastic fork protectors provide excellent lower fork tube protection.
      • self-supporting design reduces friction for smoother fork operation
    • KYB linkage-type rear suspension with 317 mm (12.5 in) of wheel travel.
      • damping characteristics specially tuned for YZ450F chassis
      • separate adjusters for high- and low-speed compression damping
      • shock is in-line with the centre axis of the frame for excellent control
      • adjustability includes spring preload, low and high speed compression damping, and rebound damping
    • 270 mm floating front wave-style disc and compact Nissin twin piston caliper.
      • wave disc design reduces weight and improves cooling (wave design offer more surface area for better cooling)
      • aggressive brake pad material offers excellent braking performance
      • “shorty-style” adjustable front brake lever can be adjusted to fit various hand sizes
    • 245 mm rear disc brake features a wave-style disc and single piston Nissin caliper.
      • heat-resistant rear rotor enhances brake durability
      • rear caliper and lower portion of the disc are protected by heavy duty plastic protectors.
    • 6.2-litre lightweight plastic resin fuel tank
      • tank specifically designed for motocross demands
      • tank is positioned under the seat to reduce centre of gravity and centralize mass for exceptional handling and a lightweight feeling
      • compact in-tank electric fuel pump

    • Compact bodywork with embedded graphics
      • Narrow bodywork design optimizes rider mobility and enhances the lightweight feel and look of the YZ450F
      • flat design, “minimal” bodywork allows for fast, easy rider movements and a natural riding position
      • minimal design aids in keeping the body work looking good longer (less plastic to scratch or damage)
      • graphics are impregnated directly into the plastic rad shrouds and will not peel off or get damaged by pressure washing
    • Flat design seat.
      • seat is narrow in the fuel tank for ideal knee grip and easy rider movements
      • front of seat features a quick remove “cap cover” to access the fuel cap
    • Lightweight D.I.D. front and rear rims.
      • stylish blue colour
      • light design reduces unsprung weight for optimal suspension performance and handling
      • excellent strength and durability due to new cross sectional rim design
      • rear hub features second bearing on sprocket side for increased rigidity and durability
    • Lithium ion battery.
      • lightweight, compact battery and under-seat, lightweight composite battery box
      • special battery management system (BMS) with “self-protection” mode both monitors and maintains battery condition
    • YDT (Yamaha Diagnostic Tool) easy access, under seat coupler.
      • easy access for Yamaha’s exclusive money- and time-saving diagnostic tool


  • Lightweight 520 drive chain
  • Quick-adjust clutch perch
  • Extra-wide foot pegs provide excellent grip
  • Convenient oil level sight glass
  • Folding shift lever tip helps prevent damage
  • Lightweight Sun Star rear sprocket
  • Heavy duty rubber swingarm protector
  • Lightweight chain guide / support helps reduce chance of chain derailment and helps protect rear sprocket
  • Clutch cable features integrated silicone grease and Teflon liner for smooth cable operation



2020 Yamaha YZ450F – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $9,399 – Team Yamaha Blue – Available from July 2019, $9,399 – Gray – Available from July 2019
Canada MSRP Price: $ 9699 CDN
Europe/UK MSRP Price: £ See dealer for pricing in GBP (On The Road inc 20% Vat)
Australia MSRP Price: See dealer for pricing in AU

Engine Type 449cc liquid-cooled DOHC 4-stroke; 4 titanium
Bore x Stroke 97.0mm × 60.9mm
Compression Ratio 13.0:1
Fuel Delivery Mikuni® fuel injection, 44mm
Transmission 5-speed; multiplate wet clutch
Final Drive Chain
Suspension / Front KYB® spring-type fork with speed sensitive
damping; fully adjustable, 12.2-in travel
Suspension / Rear KYB® single shock; fully adjustable, 12.5-in
Brakes / Front Hydraulic disc, 270mm
Brakes / Rear Hydraulic disc, 240mm
Tires / Front 80/100-21 Dunlop® MX33
Tires / Rear 120/80-19 Dunlop® MX33
L x W x H 86.0 in x 32.5 in x 50.2 in
Seat Height 38.0 in
Wheelbase 58.3 in
Rake (Caster Angle) 27.0°
Trail 4.7 in
Maximum Ground
13.0 in
Fuel Capacity 1.6 gal
Wet Weight 245 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue; Gray



2020 Yamaha YZ450F – Totalmotorcycle.com Canada Specifications/Technical Details
Liquid-cooled, DOHC, 4-valve (titanium), single
449 cc
Bore and Stroke
97 x 60.9 mm
Compression Ratio
Fuel Delivery
Mikuni 44mm throttle body F.I.
Wet sump
Ignition / Starting
TCI / Electric
Constant mesh, 5-speed
Final Drive
Suspension (Front)
Fully adjustable 48mm inverted fork / 310 mm (12.2 in.) wheel travel
Suspension (Rear)
Fully adjustable linkage-type / 317 mm (12.5 in.) wheel travel
Brakes (Front)
270 mm, floating disc / twin piston caliper
Brakes (Rear)
240 mm, disc / single piston caliper
Tires (Front)
Tires (Rear)
2,185 mm (86 in.)
825 mm (32.5 in.)
1275 mm (50.2″)
1,481 mm (58.3 in.)
Ground Clearance
330 mm (13.0″)
Seat Height
965 mm (38″)
Fuel Capacity
6.2 litres (1.4 Imp. gal.)
Wet Weight
111 kg (245 lb)
Low gloss grey
Yamaha Racing Blue



2020 Yamaha YZ450F – Totalmotorcycle.com European Specifications/Technical Details


Engine type
4-stroke, liquid-cooled, DOHC, 4-valves, rear ward slanting single cylinder
Bore x stroke
97.0 mm x 60.8 mm
Compression ratio
12.8 : 1
Maximum power
Maximum torque
Lubrication system
Wet sump
Clutch type
Wet, Multiple Disc
Ignition system
Starter system
Transmission system
Constant Mesh, 5-speed
Final transmission
Fuel consumption
CO2 emission
Fuel system
Fuel Injection


Bilateral Beam frame
Front travel
310 mm
Caster angle
Front suspension system
Upside-down telescopic fork
Rear suspension system
Rear travel
317 mm
Front brake
Hydraulic single disc, Ø270 mm
Rear brake
Hydraulic single disc, Ø245 mm
Front tyre
80/100-21 51M
Rear tyre
110/90-19 62M


Overall length
2,185 mm
Overall width
825 mm
Overall height
1,285 mm
Seat height
965 mm
Wheel base
1,485 mm
Minimum ground clearance
335 mm
Wet weight (including full oil and fuel tank)
112 kg
Fuel tank capacity
Oil tank capacity


2020 Yamaha YZ450F – Totalmotorcycle.com Australian Specifications/Technical Details


Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).

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