Yamaha YZ 250back 2011

Water cooled, 249cc, Single, 2-stroke, Reed valve

Final drive: Chain
Curb weight: 227.1 lbs
Category: Offroad
Tags: Cross, Enduro
Engine and transmission
Engine type: 1 cylinders, 2-stroke, Single
Displacement: 249 cc (15.21 cubic inches)
Bore × stroke: 2.62 inch × 2.84 inch (undersquare - longstroke)
Cooling system: Water cooled
Throttle: Cable operated
Valves
Valve train: Reed valve, variable
Fuel and ignition
Sparks per cylinder: 1
Ignition type: Analogue CDI (Capacitive Discharge Ign.)
Compression: 10.6:1
Engine mounting: Transverse
Lubrication system: Wet sump
Gear box: Manual 5-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Starter: Kick-starter
Dimensions
Physical measures
Length: 85.7 inch
Width: 32.6 inch
Height: 51.4 inch
Wheel base: 58.3 inch
Ground clearance: 15 inch
Seat height: 39.1 inch
Weight
Curb weight: 227.1 lbs
Chassis and suspension
Frame type: aluminium, Double cradle frame
Front
Suspension: Cartridge - upside-down
Suspension travel: 11.81 inch
Brake: Single Disk, Ø9.84 inch
Tire: 80 / 100 R21
Rear
Suspension: mono shock, Swingarm
Suspension travel: 12.4 inch
Brake: Disk, Ø9.65 inch
Tire: 110 / 90 R19
Other
ABS available: No
Number of riders: 2 persons

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