Positioned in Yamaha's cross - motocross motorcycle lineup, the 2011 Yamaha YZ250 relies on a 249 cc (15.2 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 66.4 x 72.0 mm (2.6 x 2.8 inches) with a 8.9:1 compression ratio.
On the scales, the YZ250 measures 103 kg (227 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 993 mm (39.1 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,481 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 7.95-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 19 indexed model years from 2008 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
993 mm (39.1 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Compression8.9:1
Bore x Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Fuel SystemCarburettor. Keihin PWK38S
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionCDI
LubricationDry sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Frame TypeAluminium
Front SuspensionSpeed-Sensitive System inverted fork
Front Travel300 mm (11.8 inches)
Rear SuspensionFully adjustable single shock, 12.4-in travel
Wheelbase1481 mm (58.3 inches)
Ground Clearance381 mm (15.0 inches)
Wheels & Brakes
Front Tyre80/100-M21
Rear Tyre110/90-M19
Front BrakesSingle disc
Front Brake Ø250 mm (9.8 inches)
Rear BrakesSingle disc
Rear Brake Ø245 mm (9.6 inches)
Dimensions & Weight
Weight incl.103.0 kg (227.0 pounds)
Seat Height993 mm (39.1 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
