2021 Yamaha YZ250F Guide

2021 Yamaha YZ250F

2021 Yamaha YZ250F 2021 Yamaha YZ250F 2021 Yamaha YZ250F

2021 Yamaha YZ250F : TUNE, RACE, WIN.

2021 Yamaha YZ250F:

With a higher‑performing engine, an updated lightweight frame, and more, the YZ250F is engineered to race ‑ and win ‑ like a champion.

With a higher-performing engine, an updated lightweight frame and other refinements, the new 2021 YZ250F is engineered to race – and win – like a champion. And now, with the new Monster Energy Yamaha Racing Edition, privateers can have that factory look whether on the practice track or the starting gate.

Developed using the very latest technology from the Yamaha’s race-winning MX2 and SX factory bikes, the new YZ250F is sharper, quicker and smoother – giving you the performance and the confidence that you need to succeed.

As soon as the gate drops you can feel the YZ250F’s new engine with its stronger low to mid-range performance thanks to the revised exhaust camshaft, lighter piston and longer con rod – while an all-new cylinder head with an improved intake design gives a harder-hitting top end. And by using your smartphone with the Power Tuner app you can select the ideal power profile for optimum race performance in all conditions.

The latest chassis feels sharper and lighter than ever thanks to the refined rigidity of the aluminium beam frame which features all-new flex characteristics, and revised suspension settings – giving you the ultimate combination of precise cornering performance and handling stability. And the new generation Icon Blue body with coordinated front and side plates gives a radical and fresh look. Tune. Race. Win.

At a glance

  • New higher-performance 250cc 4-stroke engine
  • New-shape exhaust camshaft for improved engine feeling
  • Shorter high-efficiency intake system
  • New higher-capacity muffler
  • Stronger clutch and refined transmission
  • Refined aluminium bilateral beam frame
  • Spring-type front forks with more progressive damping
  • Monocross rear suspension with optimised settings
  • Relocated handlebar position for increased controllability
  • Lighter and more powerful brakes
  • Yamaha Power Tuner app
  • Handlebar-mounted 2-mode mapping switch
  • New Icon Blue body with colour coordinated plates

 

Increased performance with total control.

The 2021 YZ250F gets an all-new high-tech engine featuring a redesigned exhaust camshaft for stronger low to mid-speed power – as well as a new high efficiency intake and mu er for a harder-hitting top end. And to handle the increased performance there’s a tougher clutch and slicker-shifting transmission.

Handling is taken to another level by ne-tuning the rigidity of the aluminium beam frame to give even lighter handling and more precise cornering – while the industry-leading spring-type forks provide the YZ250F with more progressive damping for better traction and increased cornering confidence.

A more powerful braking system helps to shave lap times, and relocated handlebars give enhanced front end traction. New Icon Blue bodywork with matching blue front and side plates sharpens the bike’s radical look – and the Power Tuner App and switchable ignition.

 

 

 

2021 Yamaha YZ250F Totalmotorcycle.com Key Features

New for 2021:

  • ll-New Cylinder Head
    The YZ250F’s already potent motor was treated to a host of refinements, including an all-new cylinder head with an improved intake port shape, new exhaust camshaft profile, a new silencer, and an updated ECU and more—to produce stronger mid- to top-end power and increased peak power, while retaining its class-leading low-end torque.
  • All-New Intake
    New air box lid intake ducts have been added for increased air flow with a new high flow air filter, air cleaner boot featuring a new shape for increased flow and a larger diameter throttle body joint.
  • Revised Bilateral Frame
    The YZ250F aluminum frame features all-new flex characteristics that give riders the ultimate combination of precise cornering performance and handling 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 YZ250F takes rider confidence to new levels.
  • New Suspension Settings
    The 2021 YZ250F features revised damping front and rear tuned in concert with the updated chassis to 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.
  • New Braking Systems
    A new, more rigid front caliper and compact rear caliper work with new pads and discs to boost brake feel and controllability while the new 240mm rear brake rotor dissipates heat more efficiently, for a more consistent racing performance.
  • Durability Enhancements
    The crank case, cam chain and tensioner, waterpump, clutch basket, and the third, fourth and fifth transmission gears have all been refined to enhance overall durability.
  • Advanced 250cc Four-Stroke
    The YZ250F™ is ready to roost the competition with race-winning features never before seen in the 250cc class.
  • 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.
  • Electric Starter System
    Utilizing a compact starter motor and ultra-lightweight lithium battery, the YZ250F brings the convenience of push-button starting to the racetrack for effortless restarts under pressure and relaxed riding when the clock isn’t ticking.
  • Advanced Engine Design
    Featuring a high-spec piston, aggressive cam profiles, cylinder geometry and more, Yamaha’s reversed cylinder head layout works to give YZ250F riders the best balance of high-rpm power with a broad, useable powerband.
  • Tuned Aluminum Frame
    Yamaha’s bilateral beam frame features main spars, engine mounts and mounting position that are designed to centralize mass and provide an ideal balance between cornering feel and straight-line rigidity.
  • Class-Leading Suspension
    Yamaha’s spring-type forks with refined, speed-sensitive damping give industry-leading suspension performance straight out of the box.

 

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 YZ250F Totalmotorcycle.com Features and Benefits
  • Innovative and Upgraded Engine
    The liquid-cooled, DOHC 4-valve, fuel-injected engine features a forward-positioned straight downdraft intake with symmetrical intake and exhaust ports. For 2021, the engine has been updated with new cylinder head featuring a new air intake system, an improved intake port shape, new exhaust camshaft profile, and an updated ECU—all to produce stronger mid- to top-end power and increased peak power, while retaining its class-leading low-end torque.
  • Exclusive Power Tuner App
    The free of charge and industry-exclusive Yamaha 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 Engine Maps
    Two-mode adjustable engine mapping allows the rider to adjust engine character with the push of a button, making it easy to tune the YZ250F for changing track or weather conditions.
  • Electric Starter System
    The YZ250F features a compact electric starter system that minimizes restart delays on track and adds convenience everywhere else. Powered by a high-capacity and ultra-lightweight, four-cell lithium-ion battery, the system adds minimal weight.
  • Piston, Rod and Crankshaft Balance
    A flat-top forged piston features a bridge-box design for additional strength with minimal weight. The piston, rings and DLC-coated piston pin, along with the offset cylinder configuration, all reduce friction loss and contribute to quick response. The engine’s intake ports, cam profiles, high-strength connecting rod and optimized crank and counterbalancer all work together to produce potent high-rpm power with user-friendly delivery and exceptional reliability.
  • Advanced Fuel Injection
    The adjustable fuel injection system uses a 44mm throttle body, fed by a high-pressure electric fuel pump, that injects fuel through a 12-hole Denso® injector. This ensures optimum fuel atomization and air/fuel calibration for excellent rideability in a wide range of riding conditions.
  • Wraparound Rear-Positioned Exhaust Layout
    An innovative exhaust pipe design improves mass centralization and power development characteristics. This layout moves the rear end of the exhaust pipe farther forward and positions the muffler closer to the bike’s center of mass.
  • Durable Transmission
    The transmission gears, dogs and shift mechanisms are designed to smooth gear changes and improve durability under the heavy demands of motocross racing. The YZ250F also features a large-diameter clutch to boost reliability even further under high-heat conditions.
  • Advanced Aluminum Frame
    The YZ250F’s compact frame refines the instinctive handling that makes this Yamaha one of the best handling machines in the class. Large upper frame bracing improves rigidity and durability. The wider rear frame spars, and the YZ250F-specific engine mounts centralize mass for the best possible balance of bump absorption, stiffness and feeling of grip.
  • Compact Body and Seat Design
    The YZ250F utilizes compact bodywork from tip to tail, including a narrow fuel tank specifically designed for motocross demands. In addition to shaving weight, the body design provides more comfortable knee grip and control feel, with a seat shaped to give the rider additional room to move aboard the machine.
  • Enhanced Mass-Centralization
    The engine, aluminum muffler and compact fuel tank are positioned close to the machine’s center of mass. This layout contributes to centralized mass for a lightweight handling feeling on the track. The wide 55mm foot pegs help lower the rider’s center of gravity for enhanced machine balance, control and rider comfort.
  • 270mm Front Brake
    A large 270mm front brake disc is the same system fitted to the YZ450F™ and uses an aggressive pad material for exceptional stopping power and braking control. Out back, a durable heat-resistant rear rotor boosts brake durability.
  • Class-Leading Suspension
    Industry-leading, fully adjustable KYB® coil spring-type fork with speed-sensitive damping provides exceptional balance between handling and bump absorption for race-winning handling performance. The linkage-type rear suspension features a KYB® shock with revised damping characteristics to match the chassis.
  • Strong, Lightweight Wheels
    Careful computer-aided refinement of each wheel’s cross-sectional profile shaves valuable weight without sacrificing durability.
  • Adjustable Handlebar Mounts
    The 4-position adjustable handlebar mounts are rubber-mounted to improve comfort and reduce handlebar vibration while the alloy handlebar centralizes overall mass.
  • Embedded Graphics
    Yamaha’s unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.
  • Race-Winning Details
    The YZ250F boasts top-spec details including 1-1/8” aluminum tapered handlebars, wide 55mm foot pegs, a quick-adjust clutch perch, stylish blue rims and gold chain.
  • Simplified Servicing
    Sleek air cleaner cover provides toolless access to the air filter, positioned at the front of the bike to avoid roost from the rear wheel.

 

 

2021 Yamaha YZ250F – Totalmotorcycle.com USA Specifications/Technical Details
US MSRP Price: $8299 USD
Canada MSRP Price: Starting at $9,699 CDN
Europe/UK MSRP Price: £ See Dealer GBP (On The Road inc 20% Vat)

Engine Type 250cc liquid-cooled DOHC 4-stroke; 4 valves
Bore x Stroke 77.0mm × 53.6mm
Compression Ratio 13.8:1
Fuel Delivery Mikuni® fuel injection, 44mm
Transmission Constant-mesh 5-speed; multiplate wet clutch
Final Drive Chain
Suspension / Front KYB® Speed-Sensitive System inverted fork;
fully adjustable, 12.2-in travel
Suspension / Rear KYB® single shock; fully adjustable, 12.5-in
travel
Brakes / Front Hydraulic disc, 270mm
Brakes / Rear Hydraulic disc, 240mm
Tires / Front 80/100-21 Bridgestone® Battlecross® X20F
Tires / Rear 100/90-19 Bridgestone® Battlecross® X20R
L x W x H 85.6 in x 32.5 in x 50.6 in
Seat Height 38.2 in
Wheelbase 58.1 in
Rake (Caster Angle) 26°
Trail 4.7 in
Maximum Ground
Clearance
13.2 in
Fuel Capacity** 1.6 gal
Wet Weight*** 234 lb
Warranty 30 Day (Limited Factory Warranty)
Color Team Yamaha Blue

 

 

 

2021 Yamaha YZ250F – Totalmotorcycle.com Canada Specifications/Technical Details

ENGINE

 

ENGINE 4-stroke, liquid-cooled, DOHC, 4-valve (titanium), single
DISPLACEMENT 250 cc
BORE AND STROKE 77 x 53.6 mm
COMPRESSION RATIO 13.8:1
FUEL DELIVERY 44 mm Mikuni throttle body F.I.
LUBRICATION Wet sump
IGNITION / STARTING TCI
TRANSMISSION Constant-mesh 5-speed
FINAL DRIVE Chain

 

CHASSIS

SUSPENSION (FRONT) Fully adj. 48mm KYB SSS inverted fork / 310 mm (12.2 in) wheel travel
SUSPENSION (REAR) Fully adj. KYB monoshock / 317 mm (12.5 in) wheel travel
BRAKES (FRONT) 270 mm, floating hydraulic wave disc / twin-piston caliper
BRAKES (REAR) 240 mm hydraulic wave disc / single piston caliper
TIRES (FRONT) 80/100-21
TIRES (REAR) 100/90-19

 

CRITICAL DATA

LENGTH 2,175 mm (85.6 in)
WIDTH 825 mm (32.5 in)
HEIGHT 1,285 mm (50.6 in)
WHEELBASE 1,475 mm (58.1 in)
GROUND CLEARANCE 335 mm (13.2″)
SEAT HEIGHT 970 mm (38.2″)
FUEL CAPACITY 6.2 litres (1.4 imp. gal.)
WET WEIGHT 106 kg (234 lb)
COLOUR(S) Yamaha Racing Blue, Monster Energy Yamaha Racing Edition

 

 

2021 Yamaha YZ250F – Totalmotorcycle.com European Specifications/Technical Details

Engine
Engine type liquid-cooled;4-stroke;4-valves;rear ward slanting
single cylinder;DOHC
Displacement 250cc
Bore x stroke 77.0 mm x 53.6 mm
Compression ratio 13.8 : 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
Chassis
Frame Semi double cradle
Caster Angle 26.5º
Trail 119mm
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 100/90 – 19 57M
Dimensions
Overall length 2175 mm
Overall width 825 mm
Overall height 1285 mm
Seat height 970 mm
Wheel base 1475 mm
Minimum ground clearance 335 mm
Wet weight (including full oil and fuel tank) 106 kg
Fuel tank capacity 6.2L
Oil tank capacity 0.95L

YZ250F
Always wear a helmet, eye protection and protective clothing. Yamaha encourage you to ride safely and
respect fellow riders and the environment. Images shown in this brochure depict professional riders
performing under controlled conditions. Specications and appearance

 

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

About Michael Le Pard 5064 Articles
"Mr. Totalmotorcycle". Owner and Founder of Total Motorcycle. Supporting over Motorcyclists and Motorcycling for 21 great years. Total Motorcycle is my pride and joy and being able to reach out 330 million people has been incredible but I could not have done it without the support of my visitors, readers and members, thank you so much! You are making a difference to millions of riders worldwide. Thank you.