Positioned in Yamaha's enduro - offroad motorcycle lineup, the 2020 Yamaha YZ250FX pairs a 250 cc (15.3 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 77.0 x 53.6 mm (3.0 x 2.1 inches) with a 13.8:1 compression ratio.
On the scales, the YZ250FX measures 111.1 kg (245 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 955 mm (37.6 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 8.33-liter (2.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 12 indexed model years from 2015 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
955 mm (37.6 in)
Engine
Displacement250.0 ccm (15.26 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsTitanium valves
Compression13.8:1
Bore x Stroke77.0 x 53.6 mm (3.0 x 2.1 inches)
Valves/Cylinder4
Fuel SystemInjection. Keihin® 44mm
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultiplate wet clutch
DrivelineO-ring chain
Chassis
Frame TypeBilateral beam frame
Rake27.2°
Trail117 mm (4.6 inches)
Front SuspensionKYB® spring-type fork with speed sensitive damping; fully adjustable
Front Travel310 mm (12.2 inches)
Rear SuspensionKYB® single shock; full adjustable
Rear Travel318 mm (12.5 inches)
Wheelbase1481 mm (58.3 inches)
Ground Clearance320 mm (12.6 inches)
Wheels & Brakes
Front Tyre80/90-21
Rear Tyre110/100-18
Front BrakesSingle disc. Hydraulic.
Front Brake Ø270 mm (10.6 inches)
Rear BrakesSingle disc. Hydraulic.
Rear Brake Ø245 mm (9.6 inches)
WheelsDunlop® AT81F tyres
Dimensions & Weight
Weight incl.111.1 kg (245.0 pounds)
Seat Height955 mm (37.6 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.
