2021 Yamaha YZ 250
Modern Styling
The front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs offer modern,
aggressive styling —just like the 4-strokes.
Lightweight Frame
A light aluminum frame houses the patented YPVS™-equipped ripper of an engine for an awesome power-to-weight ratio.
Rider-Friendly Chassis
Ultra light weight means nimble handling and less fatigue.
270mm Front Brake
Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
Two-Stroke Power
The 249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband.
Yamaha Power Valve System
Patented YPVS™ combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
Advanced Carburetor
38mm Keihin® PWK carburetor with power jet and throttle position sensor (TPS) provides precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
Race-Developed Intake
Special-design carbon fiber reed-valve petals improve the throttle response and engine performance across the entire rpm range.
Close-Ratio Transmission
Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
High-Capacity Radiator
Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
Digital Ignition
Digital CDI system delivers precise spark for faster, stronger response anywhere in the powerband.
270mm Front Brake
Large 270mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
Industry-Leading Fork
The KYB® 48mm forks feature the Speed-Sensitive System that uses piston speed to control the damping force for super-precise handling and a smooth ride.
Aluminum Frame
A carefully engineered, advanced aluminum frame and swingarm give the YZ250 the best handling in the 250 class.
Lightweight Subframe
Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
Advanced KYB® Shock
Fully adjustable KYB® shock features reduced-friction Kashima Coat™ internals, 12.4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort. All add up for fantastic rear wheel control and a sweet ride.
Excel® Rims
Lightweight 21-inch front and 19-inch rear Excel® rims provide exceptional durability and help reduce unsprung weight for optimal suspension, performance and handling.
Race-Ready Tires
Premium Dunlop® knobbies offer race-spec traction and wear.
Race-Ready Features
Complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster, the YZ250 is ready to race out of the crate.
Engine
- Engine Type:Single-Cylinder
- Cylinders:1
- Engine Stroke:2-Stroke
- Cooling:Liquid
- Valve Configuration:Reed Valve
- Bore (mm):66.4
- Bore (in):2.62
- Stroke (mm):72
- Stroke (in):2.84
- Displacement (cc):249
- Displacement (ci):15.2
- Compression Ratio:8.9:1
- Starter:Kick
- Fuel Requirements:Regular
- Compression Ratio (Secondary):10.6:1
- Fuel Type:Gas / Oil Premix
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:Keihin
- Carburetor:Yes
- Number Of Carburetors:1
- Carburetor Size (mm):38
- Carburetion Type:Carburetor
Dimensions
- Length (in):85.7
- Length (mm):2176.8
- Width (in):32.6
- Width (mm):828
- Height (in):51.4
- Height (mm):1305.6
- Wheelbase (in):58.3
- Wheelbase (mm):1480.8
- Ground Clearance (in):14.2
- Ground Clearance (mm):360.7
- Length (ft):7.14
- Length (ft/ft):7
- Length (ft/in):1.7
Other
- Fuel Capacity (gal):2.1
- Fuel Capacity (l):8
- Frame:Aluminum
- Body Material:Plastic
- Chain Guard:Yes
- Chassis Protectors:Yes
- Fork Guards:Yes
- Foot Peg Location:Driver
- Front Suspension Type:Inverted Fork
- Front Suspension Size (in):1.9
- Front Suspension Size (mm):48
- Front Travel (in):11.8
- Front Travel (mm):299.7
- Front Adjustable Fork Pre-Load:Yes
- Front Adjustable Rebound Damping:Yes
- Front Suspension Brand Name:KYB
- SysModelID:107466
- MfrModelID:YZ250M2
- Year:2021
- Manufacturer:Yamaha
- Model Name:YZ
- Trim Name:250
- Family Name:YZ
- Product Type:Motorcycle / Scooter
- Manufacturer Type:Motorcross
- Generic Type (Primary):Off-Road
- Manufacturer Country:Japan
- Photo Name:2021_Yamaha_YZ_250.jpg
- Major Revision Year:2008
- Revision Status:Carryover
- Competitor Code:MOT21OAG000
- Manufacturer Recommend Minimum Age:16
- SysTrimId:329126
- SysMakeId:1
- Historical ID:289790
- Data Provider:CRS
- Parent Company:Yamaha
- Display Name:YZ250
- Engine Displacement to Weight (cc):1.1
- Currency:US Dollars
- Warranty (Months):1
- Destination Charge:425
- Warranty (Condition):Limited
- Rear Suspension Type:Twin Sided Swing Arm
- Rear Travel (in):12.4
- Rear Travel (mm):315
- 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):39.1
- Seat Height (mm):993.1
- Number Of Seats:1
- Steering Control:Handlebar
- Tire Brand:Dunlop®
- Front Tire Width:80
- Front Tire Aspect Ratio:100
- Front Wheel Diameter:21
- Rear Tire Width:110
- Rear Tire Aspect Ratio:90
- Rear Wheel Diameter:19
- Front Tire (Full Spec):Dunlop® MX52 80/100 R21
- Rear Tire (Full Spec):Dunlop® MX52 110/90 R19
- Wheels Composition:Aluminum
- Tube / Tubeless:Tubed
- Front Wheel Width (in):1.6
- Rear Wheel Width (in):2.15
- Chromed:Yes
