2017 Yamaha YZ250

/
THE KING OF MX 2-STROKES

Nothing beats a YZ250 for pure lightweight two-stroke performance combined with Yamaha reliability and durability.

Additional Features

  • RACE-READY FEATURES: The YZ250 is ready to race out of the crate, complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster.

Chassis / Suspension

  • NEW 270MM FRONT BRAKE: New 270mm front brake system is a huge 20mm larger than the disc fitted to the 2016 YZ250 and uses an all-new pad material for exceptional stopping power and braking control.
  • INDUSTRY-LEADING FORK: The KYB® 48mm forks feature the Speed-Sensitive System that uses piston speed to control 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 adding up to 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.

Engine

  • TWO-STROKE POWER: 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 CARBURETION: 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 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.

New for 2016

  • NEW FRONT BRAKE: New 270mm front disc brake (up from 250mm) also features a new brake pad material for exceptional stopping power and control for aggressive corner entries

Top Features

  • MODERN STYLING: Modern, aggressive styling, including 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—just like the 4-strokes.
  • LIGHTWEIGHT FRAME: A light aluminum frame housing a patented YPVS™-equipped ripper of an engine results in an awesome power-to-weight ratio.
  • RIDER-FRIENDLY CHASSIS: Ultra light weight means nimble handling with less fatigue.
  • NEW 270MM FRONT BRAKE: Larger 270mm front disc brake coupled with new pad material offers outstanding machine control and performance, with exceptional stopping power and controllability.

General Information

Manufacturer Yamaha
Model Year 2017
Model YZ250
Model Code YZ250H2
Color Team Yamaha Blue

Brakes/Wheels/Tires

Brakes

Front - 270 mm hydraulic single disc

Rear - 245 mm hydraulic single disc

Tires

Front - 80/100-21 Dunlop® MX52

Rear - 110/90-19 Dunlop® MX52

Dimensions

Length 85.7 in.
Height 51.4 in.
Width 32.6 in.
Weight Wet - 227 lbs.
Ground Clearance 14.2 in.
Wheelbase 58.3 in.
Seat Height 39.1 in.

Drivetrain

Transmission Constant-mesh; 5-speed
Final Drive Chain

Engine

Engine Reed-valve inducted, 2-stroke
Displacement 249cc
Bore x Stroke 66.4 x 72 mm
Compression Ratio 8.9 ~ 10.6:1
Carburetion Keihin® PWK38S
Fuel Capacity 2.1 gal.
Ignition CDI
Clutch Multi-plate wet
Cooling Liquid

Operational

Suspension

Front - KYB® Speed-Sensitive System inverted fork; fully adjustable; 11.8 in. travel

Rear - KYB® single shock; fully adjustable; 12.4 in. travel

Rake 27.7°
Trail 4.8 in.