Yamaha YZ250 - 2018 Specifications and Reviews

The 2018 Yamaha YZ250 is a two-stroke motocross bike designed for intermediate to advanced riders seeking aggressive performance and lightweight agility. Known for its crisp power delivery and responsive handling, it excels in competitive racing and technical terrain. The electric starter and compact 103kg frame make it a versatile choice for serious off-road competitors.

5 stars Average rating: 5 from 1 votes
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General information

CategoryCross / motocross
Year2018
ModelYamaha YZ250
 
 

Engine and Transmission Specifications

Transmission type,final driveChain
Gearbox5-speed
Cooling systemLiquid
Lubrication systemPremix
IgnitionCDI
Fuel systemCarburettor. Keihin PWK38S
Bore x Stroke66.4 x 72.0 mm (2.6 x 2.8 inches)
Compression10.6:1
Engine detailsReed-valve inducted
Engine typeSingle cylinder, two-stroke

Brakes, suspension, Frame and wheels

WheelsDunlop® MX52 tyres
Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc
Front brakes diameter250 mm (9.8 inches)
Front brakesSingle disc
Rear tyre110/90-19
Front tyre80/100-21
Rear wheel travel315 mm (12.4 inches)
Rear SuspensionKYB® single shock; fully adjustable
Front wheel travel300 mm (11.8 inches)
Front SuspensionKYB® Speed-Sensitive System inverted fork; fully adjustable
Trail122 mm (4.8 inches)
Rake (fork angle)27.7°
Frame typeSemi-double cradle aluminium

Physical measures and capacities

Oil capacity0.80 litres (0.05 quarts)
Fuel capacity8.00 litres (2.11 gallons)
Wheelbase1,481 mm (58.3 inches)
Ground clearance367 mm (14.4 inches)
Overall width827 mm (32.6 inches)
Overall length2,147 mm (84.5 inches)
Overall height1,299 mm (51.1 inches)
Seat height976 mm (38.4 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc103.0 kg (227.0 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric
Color optionsTeam Yamaha Blue

Performance Profile & Rider Fit

Best For

Track90%
City5%
Cornering85%
Daily Riding8%
Touring8%
Passenger0%

Rider Profile

Best ForBest suited to intermediate and expert off-road riders who understand two-stroke power delivery and motocross bike handling.
PurposeBuilt purely for motocross track riding and competitive off-road racing, not for general transportation.
Rider FitIts ultra-light 103 kg wet weight and tall 975 mm seat height demand good rider fitness, standing-based riding skill, and reasonable leg length.
CharacterA raw, punchy two-stroke motocrosser that rewards aggressive riding, precise clutch and throttle control, and delivers explosive mid-to-top-end power with razor-sharp agility.
Not Ideal ForNot suitable for commuting, highway travel, passengers, or riders wanting plush comfort and low-maintenance simplicity.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2018 Yamaha YZ250 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 976mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2018 Yamaha YZ250, with a cramped knee angle of around 85 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

Awesome tool off road
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