2021 Yamaha YZ450F : TUNE IN TO VICTORY.
2021 Yamaha YZ450F:
Class‑leading performance and suspension and the smartphone Power Tuner app make the YZ450F the bike of choice for race winners.
With its low weight, outstanding power and precise handling, the YZ450F delivers the technology and performance needed to take you into the victorYZone. Making this bike the clear choice for every racer who wants to discover their true winning potential.
The compact engine comes with a lightweight rearward slanted cylinder that maximizes the performance of the high compression head, forged piston and aggressive camshaft profiles. And using the Power Tuner app on your smartphone you can make instant trackside mapping adjustments and tune the engine power characteristics to gain a real advantage in all riding conditions.
Its lightweight aluminium bilateral frame has been designed to give an idealized balance of rigidity for precise handling and agile cornering – while the industry-leading coil spring-type forks and linkage rear suspension deliver exceptional balance.
At a glance
- Ultra-compact 450cc engine: power with control
- Light and compact rearward-slanted cylinder
- Yamaha Power Tuner app for instant track-side tuning
- Handlebar switch for easily adjustable mapping
- Compact electric starter with ultra-light battery
- Launch Control System for quicker, smoother starts
- Advanced fuel injection system for optimum power
- Angled radiators ensure effective engine cooling
- Robust transmission for positive shifting
- Compact mass-centralised wraparound exhaust
- Lightweight aluminium frame for agile handling
- Class-leading front and rear suspension systems
2021 Yamaha YZ450F Totalmotorcycle.com Key Features
- Ultimate Open Class YZ®
More Power. Better Handling. Simply put, the 2021 YZ450F™ is better everywhere. With a more compact motor, a thoroughly refined and balanced chassis and improved ergonomics, the YZ450F gives the rider the ability to perform at their best, lap after lap.
- Yamaha Power Tuner App
Yamaha’s free of charge and industry-leading Power Tuner app puts the flexibility and precision tunability of the GYTR® Power Tuner into your smartphone. Make fueling and ignition timing changes instantly and upload them to the bike for ultimate track-side tuning, or use the handlebar-mounted switch to change fueling maps on the fly.
- Compact and Cutting-Edge Fuel-Injected Engine
Inside the ultra-compact new motor, a high-compression cylinder head, forged piston, aggressive cam profiles and much more work together to give YZ450F riders the best balance of open-class power with controllability. Plus, the electric start makes it even easier.
- Advanced Alloy Frame
Yamaha’s bilateral beam aluminum frame features updated main spars, triple clamps and engine mounting points that centralize mass and provide an ideal rigidity balance between cornering feel and straight-line confidence.
- Class-Leading Suspension
Yamaha’s spring-type forks with refined, speed-sensitive damping give industry-leading suspension performance straight out of the box.
- Cylinder Head
The YZ450F’s potent motor includes combustion chamber geometry with steeper valve angles, aggressive cam profiles, a high compression piston with low friction rings, longer connection rod, larger exhaust head pipe connector, a high flow air filter, more efficient breather system and more—all while fitting under a smaller and lighter magnesium valve cover.
- Smoother Shifting
Gear widths and shapes improve shifting feel and precision without sacrificing Yamaha’s legendary reliability under racing conditions.
- Bilateral Beam Frame
The YZ450F aluminum frame features flex characteristics that give riders the ultimate combination of precise cornering performance, traction and bump stability. By tuning the rigidity balance of the chassis with changes to the lateral beams and engine cradle tube thickness as well as engine mounts, top triple clamp and front axle, the 2021 YZ450F takes rider confidence to new levels.
- New Braking Systems
The rigid front caliper and compact rear caliper work with the pads and discs to boost brake feel and controllability while the 240mm rear brake rotor dissipates heat more efficiently for more consistent performance under racing conditions.
- Suspension Tuning
The front and rear damping, tuned in concert with the chassis, improve cornering performance, traction and bump absorption. With smoother chassis movement, the rider is able to make the most of the engine’s exceptional power with greater confidence.
Yamaha Announces Full Lineup of 2021 Motocross Bikes
Race like a Champion with Yamaha’s Redesigned YZ250F and Monster Energy® Yamaha Racing Editions
Yamaha Motor Corporation, USA, introduces its complete lineup of race-ready 2021 motocross bikes including the updated YZ250F. Featuring a thoroughly refined engine, revised frame, new suspension settings and new brakes, the YZ250F continues to dominate the competition with the best balance of power and handling.
“The YZ250F is clearly the leader in its class, winning back-to-back Monster Energy AMA Supercross West Coast 250SX Championships, dominating media shootouts year after year, and by offering industry-exclusive features like the free Power Tuner app, which allows riders to wirelessly tune engine performance for changing track conditions,” said Derek Brooks, Yamaha Motorsports Motorcycle Product Line Manager. “For 2021 the YZ250F gets significant engine, frame, suspension and brake updates to deliver more class-leading power and offer a superior balance of nimble yet confidence-inspiring handling. Yamaha’s entire 2021 motocross lineup continues to raise the bar of competitive performance.”
Also new for 2021, the YZ250F and YZ450F will be offered in special Monster Energy Yamaha Racing Editions, pairing Yamaha’s legendary YZ performance with a new, race team-inspired aesthetic.
In addition to the updated YZ250F and the Monster Energy Racing Edition models, the full two-stroke lineup consisting of the YZ65, YZ85, YZ125 and YZ250, as well as the four-stroke YZ450F, all return for 2021 with the next-generation Team Yamaha Blue color and graphics scheme to further accentuate the advances of the YZ series.
Welcome to the victorYZone
Yamaha’s off-road competition bikes offer the very latest in technology with performance features designed to help racing enthusiasts reach their maximum potential, win races, and stand on top of the podium.
New 2021 YZ250F: Tune, Race, Win
The new 2021 Yamaha YZ250F has been redesigned for a more competitive, greater performing motocross experience. The new 250cc, liquid-cooled, four-stroke, electric start engine features an all-new cylinder head with an improved intake port shape and new camshaft profile, as well a new airbox and intake track, a new silencer, and an updated ECU. These modifications, along with other refinements like an updated transmission and shift cam, a revised clutch design and improved water pump impeller, all help to produce stronger mid- to top-end power and increased peak power, while retaining its class-leading low-end torque.
Tuned specifically for the 2021 YZ250F, the updated lightweight aluminum, bilateral beam frame, and new engine mounts have been redesigned with all-new flex characteristics to improve bump absorption, traction, and cornering performance. The industry-leading, fully adjustable KYB® coil spring-type fork, with enhanced speed-sensitive damping, provides an exceptional balance between comfort and bottoming resistance while the link-type rear suspension features a KYB shock with revised damping characteristics to match the updated chassis. Other chassis components such as the top triple clamp, handlebar mounts, and front axle were also redesigned to complement the new frame. Improved braking performance is achieved with newly engineered lighter weight front and rear brake calipers, larger surface area brake pads, and redesigned front (270mm) and rear (240mm) discs.
The 2021 YZ250F gives racers the edge right out of the gate. Standard equipment includes electric start, a lightweight lithium battery, advanced fuel injection, a front-positioned intake, and rear-positioned exhaust layout to deliver the widest spread of power with reliable performance while balancing the weight for excellent mass-centralization. Racers can adjust their engine performance straight from their phone using the onboard wireless connectivity through the industry’s only free-of-charge complete tuning system, which is highlighted by the Yamaha Power Tuner App. Once settings are dialed in, racers can then choose between two user-defined ECU maps on the fly via the handlebar mounted dual-mode engine map switch. Complemented by new next-generation Team Yamaha Blue color and graphics, the 2021 YZ250F showcases Yamaha’s race-winning pedigree.
New for 2021: Monster Energy Yamaha Racing Editions
Stand out from the crowd. The 2021 YZ250F and 2021 YZ450F now come in new Monster Energy Yamaha Racing Editions. With a factory team-inspired color and graphics package, riders can feel as if they too are part of a Yamaha championship-winning Supercross team.
2021 YZ450F: Tune into Victory
The 2021 YZ450F returns with all of the class-leading features first introduced on the 2020 YZ450F, including an updated engine, cylinder head, frame and technology features for a more powerful and better handling motocross experience. Racers can achieve quicker, smoother race starts through Yamaha’s Launch Control System, adjust their on-track performance using the onboard wireless connectivity through the free-of-charge Yamaha Power Tuner App right from their phone, and choose between two user-defined ECU maps on the fly through the handlebar-mounted dual-mode engine map switch.
2021 YZ125 and YZ250
Yamaha’s YZ125 and YZ250 models return for 2021 to complete Yamaha’s full-size lineup of motocross bikes. With their modern styling, lightweight aluminum frame and industry-leading KYB Speed Sensitive System front forks and KYB fully-adjustable rear shock, the 2021 YZ125 and YZ250 continue their outstanding performance and durability with a rider-friendly chassis and race-ready features.
2021 YZ65 and YZ85
The 2021 youth models are once again ready to tackle the track. The YZ65 and YZ85 are powered by confidence-inspiring 65cc and 85cc two-stroke engines. Featuring the Yamaha Power Valve System, these engines deliver a broad spread of power and torque across the entire rev range, without losing any power at high RPM. Fully adjustable, industry-leading 36mm KYB spring type forks and KYB rear shock 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 2021 YZ65 and YZ85 are built to keep kids on the track.
Yamaha bLU cRU Off-Road Racing Contingency Program
All 2021 YZ models are eligible for Yamaha’s current 2020 bLU cRU Off-Road Racing Contingency Program, which features 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 percent rebate on GYTR parts and accessory purchases of up to $1,000, and receive an instant $45 credit.
2021 Yamaha YZ450F Totalmotorcycle.com Features and Benefits
- More Compact Rearward-Slanted Cylinder
The YZ450F’s distinct rearward-slanted cylinder light and compact design are ideally positioned in the frame for optimized weight distribution. Inside, the head features steep valve angles to allow for an even straighter down-draft intake port, as well as more aggressive cam profiles and larger diameter exhaust header joint that work together with a higher compression bridge-box design piston, DLC-coated piston pin, and longer connecting rod to give YZ450F riders the best balance of class-leading power with an outstanding level of control.
- Yamaha Power Tuner App
The free of charge and industry-leading Yamaha-created Power Tuner app brings the power of the GYTR Power Tuner to your iOS® or Android® device. Using wireless connectivity to talk to the bike’s onboard CAN-bus network, the app allows owners to adjust air/fuel mixture and ignition timing maps 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.
- Adjustable Fuel Mapping
A handlebar-mounted map switch allows the rider to quickly select between preloaded engine maps—loaded and configured in the Power Tuner app—to account for changing track and weather conditions.
- Electric Starter System
The YZ450F features a compact electric starter system to minimize restart delays on track and add convenience everywhere else. Powered by a high-capacity and ultra-lightweight four-cell lithium-ion battery, the system adds minimal weight.
- Launch Control System (LCS)
LCS optimizes engine output for quicker, smoother race starts every time by boosting controllability out of the gate and ensuring the rider has the best chance to get the holeshot and lead the competition into the first turn.
- Advanced Fuel Injection
The engine breathes through a 44mm Mikuni® throttle body that is fed by a high pressure electric pump to ensure optimum fuel atomization and power for a wide range of riding conditions. The ultra-compact throttle body also saves weight for excellent mass-centralization.
- Cooling System
The YZ450F features radiators that are angled directly in the incoming air stream for enhanced cooling, even under the most demanding race conditions.
- Robust Transmission and Clutch
The YZ450F’s transmission gears use a wide surface area that is balanced against updated clutch components. All designed to boost durability, the shift drum and selectors improve feel with a shorter, more direct stroke when changing gears, too.
- Wraparound Rear-Positioned Exhaust
Yamaha’s innovative exhaust pipe design enhances mass centralization by moving the rear end of the exhaust pipe farther forward and enabling the muffler’s position closer to the machine’s center of the mass. Thanks to a wider joint profile, power development is enhanced, too.
- Bilateral Beam Aluminum Frame
The YZ450F’s compact aluminum frame further refines the instinctive handling that makes this Yamaha one of the sharpest machines in its class. Every aspect has been carefully retuned, with thinner main spar construction, thicker down tubes, revised top triple clamp, and all-new motor mounts that work together to optimize overall rigidity balance for excellent handling, especially in fast, bumpy conditions.
- Compact Body and Seat Design
The YZ450F features stylish bodywork from tip to tail, including a compact fuel tank specifically designed for motocross demands. The lower, forward-positioned handlebar position and the firmer seat assist the rider in keeping their weight forward during aggressive riding.
- Revised Class-Leading Suspension
Industry-leading, fully adjustable KYB® coil spring-type fork with speed sensitive damping provides exceptional balance between handling and bump absorption. The linkage-type rear suspension features a KYB® shock with damping characteristics to match the YZ450F chassis.
- Brake System
A large 270mm front disc brake is coupled with a rigid caliper and aggressive pad material that offers outstanding braking performance and machine control. Out back, the rear system sheds weight with a compact caliper and 240mm rear rotor for better heat dissipation.
- Lightweight Wheels
Careful computer-aided refinement of each wheel’s cross-sectional profile shaves valuable weight without sacrificing durability.
- Triple Clamp with Adjustable Handlebar Mounts
The top triple clamp design balances rigidity for improved steering feel while the 4-position adjustable handlebar clamp is rubber-mounted for comfort, reduced handlebar vibration and easily tunable bar position.
- Embedded Graphics
Yamaha’s unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.
- Race-Winning Details
The YZ450F includes top-spec details, including 1-1/8” aluminum tapered handlebars, wider yet lighter foot pegs, a quick-adjust clutch perch, stylish blue rims and gold chain.
2021 Yamaha YZ450F – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $9399 USD
Canada MSRP Price: Starting at $10,599 CDN
Europe/UK MSRP Price: £ See Dealer GBP (On The Road inc 20% Vat)
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
Fuel Capacity 1.6 gal
Wet Weight 245 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue
2021 Yamaha YZ450F – Totalmotorcycle.com Canada Specifications/Technical Details
|ENGINE||Liquid-cooled, DOHC, 4-valve (titanium), single|
|BORE AND STROKE||97 x 60.9 mm|
|FUEL DELIVERY||Mikuni 44mm throttle body F.I.|
|IGNITION / STARTING||TCI / Electric|
|TRANSMISSION||Constant mesh, 5-speed|
|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|
|LENGTH||2,185 mm (86 in.)|
|WIDTH||825 mm (32.5 in.)|
|HEIGHT||1,285 mm (50.6 in.)|
|WHEELBASE||1,485 mm (58.5 in.)|
|GROUND CLEARANCE||330 mm (13.0 in.)|
|SEAT HEIGHT||965 mm (38 in.)|
|FUEL CAPACITY||6.2 litres (1.4 Imp. gal.)|
|WET WEIGHT||111 kg (245 lb)|
|COLOUR(S)||Yamaha Racing Blue, Monster Energy Yamaha Racing Edition|
2021 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 13.0 : 1
Lubrication system Wet sump
Clutch Type Wet;Multiple Disc
Ignition system TCI
Starter system Electric
Transmission system Constant Mesh;5-speed
Final transmission Chain
Carburettor Fuel Injection
Frame Semi double cradle
Caster Angle 26º55
Front suspension system Upside-down telescopic fork
Rear suspension system Swingarm;(link suspension)
Front travel 310 mm
Rear Travel 317 mm
Front brake Hydraulic single disc, Ø270 mm
Rear brake Hydraulic single disc, Ø240 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 330 mm
Wet weight (including full oil and fuel tank) 112 kg
Fuel tank capacity 6.2litres
Oil tank capacity 0.90litres
Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).