2021 Yamaha YZ 250F Monster Energy Racing Edition

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Monster Energy® Yamaha Racing Edition
Inspired by the YZ250F raced by the Yamaha Supercross team, the Monster Energy® Yamaha Racing Edition features an aggressive color and graphics package that stands out from the crowd.

All-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.

High Tech 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-exclusive 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 which 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.

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.

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.

Electric Starter System
The YZ250F features a compact electric starter system that minimizes restart delays on the track and adds convenience everywhere else. Powered by a high-capacity and ultra-lightweight, four-cell lithium-ion battery, the system adds minimal weight.

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.

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.

Enhanced Cooling
Lightweight radiators are larger and angled more directly in the incoming air stream for improved cooling, even under the most demanding race conditions. Inside the engine, the high-flow impellor and water pump boost endurance and durability under the toughest racing conditions.

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. The large upper frame bracing improves rigidity and durability. The wider rear frame spars and 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 footpegs 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 centralize 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 footpegs, a quick-adjust clutch perch, stylish blue rims and gold chain.

Simplified Servicing
The 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.

Engine

  • Engine Type:
    Single-Cylinder
  • Cylinders:
    1
  • Engine Stroke:
    4-Stroke
  • Cooling:
    Liquid
  • Valves:
    4
  • Valves Per Cylinder:
    4
  • Valve Configuration:
    DOHC
  • Bore (mm):
    77
  • Bore (in):
    3.03
  • Stroke (mm):
    53.6
  • Stroke (in):
    2.11
  • Displacement (cc):
    250
  • Displacement (ci):
    15.3
  • Compression Ratio:
    13.8:1
  • Starter:
    Electric
  • Fuel Requirements:
    Regular
  • Fuel Type:
    Gas

Brakes

  • Front Brake Type:
    Hydraulic Disc
  • Front Brake Diameter (in):
    10.6
  • Front Brake Diameter (mm):
    270
  • Rear Brake Type:
    Hydraulic Disc
  • Rear Brake Diameter (in):
    9.7
  • Rear Brake Diameter (mm):
    245

Carburetion

  • Carburetion Brand:
    Mikuni
  • Fuel Injector:
    Yes
  • Fuel Injector Size (mm):
    44
  • Carburetion Type:
    Fuel Injected

Dimensions

  • Length (in):
    85.6
  • Length (mm):
    2174.2
  • Width (in):
    32.5
  • Width (mm):
    825.5
  • Height (in):
    50.6
  • Height (mm):
    1285.2
  • Wheelbase (in):
    58.1
  • Wheelbase (mm):
    1475.7
  • Ground Clearance (in):
    13.2
  • Ground Clearance (mm):
    335.3
  • Length (ft):
    7.13
  • Length (ft/ft):
    7
  • Length (ft/in):
    1.6

Other

  • Fuel Capacity (gal):
    1.6
  • Fuel Capacity (l):
    6.1
  • Frame:
    Aluminum
  • Body Material:
    Plastic
  • Chain Guard:
    Yes
  • Chassis Protectors:
    Yes
  • Fork Guards:
    Yes
  • Foot Peg Location:
    Driver
  • Front Suspension Type:
    Inverted Fork
  • Front Travel (in):
    12.2
  • Front Travel (mm):
    309.9
  • Front Adjustable Fork Pre-Load:
    Yes
  • Front Adjustable Rebound Damping:
    Yes
  • Front Suspension Brand Name:
    KYB
  • SysModelID:
    107466
  • MfrModelID:
    YZ250FMME
  • Year:
    2021
  • Manufacturer:
    Yamaha
  • Model Name:
    YZ
  • Trim Name:
    250F Monster Energy Yamaha Racing Edition
  • Family Name:
    YZ
  • Product Type:
    Motorcycle / Scooter
  • Manufacturer Type:
    Motorcross
  • Generic Type (Primary):
    Off-Road
  • Manufacturer Country:
    Japan
  • Photo Name:
    2021_Yamaha_YZ_250F_Monster.jpg
  • Major Revision Year:
    2021
  • Revision Status:
    New
  • Competitor Code:
    MOT21OAG000
  • Introduction Year:
    2021
  • Manufacturer Recommend Minimum Age:
    16
  • SysTrimId:
    329135
  • SysMakeId:
    1
  • Data Provider:
    CRS
  • Parent Company:
    Yamaha
  • Display Name:
    YZ250F Monster Energy Yamaha Racing Edition
  • Engine Displacement to Weight (cc):
    1.07
  • Currency:
    US Dollars
  • Warranty (Months):
    1
  • Destination Charge:
    425
  • Warranty (Condition):
    Limited
  • Rear Suspension Type:
    Twin Sided Swing Arm
  • Rear Travel (in):
    12.5
  • Rear Travel (mm):
    317.5
  • Rear Adjustable Shock / Spring Pre-Load:
    Yes
  • Rear Adjustable Rebound Damping:
    Yes
  • Number Rear Shock Absorbers:
    1
  • Rear Suspension Brand Name:
    KYB
  • Rear Suspension Material:
    Aluminum
  • Seat Type:
    One-Piece
  • Seat Material:
    Vinyl
  • Seat Location:
    Driver
  • Seat Height (in):
    38.2
  • Seat Height (mm):
    970.3
  • Number Of Seats:
    1
  • Steering Control:
    Handlebar
  • Tire Brand:
    Bridgestone®
  • Front Tire Width:
    80
  • Front Tire Aspect Ratio:
    100
  • Front Wheel Diameter:
    21
  • Rear Tire Width:
    100
  • Rear Tire Aspect Ratio:
    90
  • Rear Wheel Diameter:
    19
  • Front Tire (Full Spec):
    Bridgestone® Battlecross® X20F 80/100 R21
  • Rear Tire (Full Spec):
    Bridgestone® Battlecross® X20R 100/90 R19
  • Wheels Composition:
    Aluminum
  • Tube / Tubeless:
    Tubed
  • Chromed:
    Yes

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