General |
Year
|
2018
|
2018
|
Manufacturer
|
Yamaha
|
Yamaha
|
Model Name
|
YZ250
|
YZ250
|
Trim Name
|
Base
|
Base
|
Generic Type (Primary)
|
Off-Road
|
Off-Road
|
Engine |
Engine Type
|
2-stroke; reed-valve inducted
|
2-stroke; reed-valve inducted
|
Displacement
|
249cc
|
249cc
|
Cooling
|
liquid-cooled
|
liquid-cooled
|
Bore
|
66.4 mm
|
66.4 mm
|
Stroke
|
72.0 mm
|
72.0 mm
|
Compression Ratio
|
8.9~10.6:1
|
8.9~10.6:1
|
Fuel System
|
Keihin® PWK38S
|
Keihin® PWK38S
|
Ignition
|
CDI
|
CDI
|
Final Drive
|
Chain
|
Chain
|
Drivetrain |
Transmission
|
Constant-mesh 5-speed; multiplate wet clutch
|
Constant-mesh 5-speed; multiplate wet clutch
|
Suspension |
Front Suspension
|
KYB® Speed-Sensitive System inverted fork; fully adjustable
|
KYB® Speed-Sensitive System inverted fork; fully adjustable
|
Front Travel (in./cm.)
|
11.8-in
|
11.8-in
|
Rear Suspension
|
KYB® single shock; fully adjustable
|
KYB® single shock; fully adjustable
|
Rear Travel (in./cm.)
|
12.4-in
|
12.4-in
|
Brakes |
Front braking system
|
Hydraulic disc, 270mm
|
Hydraulic disc, 270mm
|
Rear braking system
|
Hydraulic disc, 245mm
|
Hydraulic disc, 245mm
|
Wheels & Tires |
Front Tires / Model
|
80/100-21 Dunlop® MX52
|
80/100-21 Dunlop® MX52
|
Rear Tires / Model
|
110/90-19 Dunlop® MX52
|
110/90-19 Dunlop® MX52
|
Dimensions |
Length
|
85.7 in
|
85.7 in
|
Width
|
32.6 in
|
32.6 in
|
Height
|
51.4 in
|
51.4 in
|
Seat Height
|
39.1 in
|
39.1 in
|
Wheelbase
|
58.3 in
|
58.3 in
|
Raking Angle Degrees
|
27.7°
|
27.7°
|
Trail
|
4.8 in
|
4.8 in
|
Ground Clearance
|
14.2 in
|
14.2 in
|
Capacities |
Fuel Capacity
|
2.1 gal
|
2.1 gal
|
Weights |
Weight
|
Wet: 227 lb
|
Wet: 227 lb
|
Warranty |
Warranty
|
30 Day (Limited Factory Warranty)
|
30 Day (Limited Factory Warranty)
|
|
|
|