ENGINE:  

Engine Type Single-Cylinder

Cylinders 1

Engine Stroke 4-Stroke

Cooling Liquid

Valves 4

Valves Per Cylinder 4

Valve Configuration DOHC

Bore (mm/in) 77 / 3.03

Stroke (mm/in) 53.6 / 2.11

Displacement (cc/ci) 249 / 15.2

Compression Ratio 13.5:1

Starter Electric / Kick

Fuel Requirements Regular

Fuel Type Gas

Carburetion Brand Keihin

Fuel Injector Yes

Fuel Injector Size (mm) 44

Carburetor No

Carburetion Type Fuel Injected

TRANSMISSION:  

Transmission Type Manual

Number Of Speeds 6

Overdrive No

Primary Drive (Rear Wheel) Chain

Reverse No

WHEELS & TIRES:  

Wheels Composition Aluminum

Tube / Tubeless Tubed

Chromed Yes

Tire Brand Dunlop®

Front Tire Width 90

Front Tire Aspect Ratio 90

Front Tire Speed Rating 54M

Front Wheel Diameter 21

Rear Tire Width 110

Rear Tire Aspect Ratio 100

Rear Tire Speed Rating 64M

Rear Wheel Diameter 18

Front Tire (Full Spec) Dunlop® 90/90 R21 54M

Rear Tire (Full Spec) Dunlop® 110/100 R18 64M

BRAKES:  

Front Brake Type Hydraulic Disc

Front Brake Diameter (in/mm) 9.8 / 250

Rear Brake Type Hydraulic Disc

Rear Brake Diameter (in/mm) 9.7 / 245

SUSPENSION:  

Front Suspension Type Inverted Fork

Front Travel (in/mm) 12.2 / 309.9

Front Adjustable Fork Pre-Load Yes

Front Adjustable Rebound Damping Yes

Front Central Suspension Strut No

Front Suspension Brand Name KYB

Steering Damper No

Rear Suspension Type Twin Sided Swing Arm

Rear Travel (in/mm) 12.5 / 317.5

Rear Adjustable Shock / Spring Pre-Load Yes

Rear Adjustable Rebound Damping Yes

Number Rear Shock Absorbers 1

Rear Suspension Material Aluminum

Air Adjustable No

STEERING:  

Steering Control Handlebar

TECHNICAL SPECIFICATIONS:  

Length (ft) 7.1

Width (in/mm) 32.5 / 825.5

Height (in/mm) 50.4 / 1280.2

Wheelbase (in/mm) 57.7 / 1465.6

Ground Clearance (in/mm) 12.8 / 325.1

Length (ft/ft) 7

Length (ft/in) 1

Wet Weight (lbs/kg) 249 / 112.9

Fuel Capacity (gal/l) 2.1 / 8

Engine Displacement to Weight (cc) 1

SEATS:  

Seat Type One-Piece

Adjustable No

Seat Material Vinyl

Seat Location Driver

Folding No

Seat Height (in/mm) 38 / 965.2

Number Of Seats 1

EXTERIOR:  

Frame Aluminum

Body Material Plastic

Hand Grips Standard

Foot Peg Location Driver

Adjustable No

Chain Guard Yes

Chassis Protectors Yes

Drive Shaft Guard No

Engine Case Guard No

Fork Guards Yes

Saddle Bag Guard No

Tank Guard No

Belt Guard No

Hand Guards No

Brush Guard No

Exhaust Guard No

Light Guard No

Fuel Tank Cover No

Front Fender Standard

Rear Fender Standard

Handlebars Standard

Handlebar Pads Standard

Skid Plate Standard

PRICING:  

Warranty (Months/Condition) 1 / Limited

IDENTIFICATION:  

Generic Type (Primary) Off-Road

Manufacturer Country Japan

Introduction Year 2015

Manufacturer Recommend Minimum Age 16

Parent Company Yamaha

Display Name YZ250FX

PAINT & FINISH:  

Metallic No

CONVENIENCE:  

Adjustable Handlebars Standard

Adjustable Levers Standard

Model: 2015 Yamaha YZ250FX