2018Yamaha YZ250

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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.

Capacity: 249.0 ccm
Engine: Single, two-stroke
Gearbox: 5-speed
Dry weight: 96.2 kg
Seat height: 976 mm
Power: 24.9 HP (18.3 kW)

⇄ Compare with another bike All model years

What’s new for the 2018 Yamaha YZ250

vs the 2017

Spec	2017	2018
Front suspension	48mm fork, separate air/oil function fork	KYBÂ® Speed-Sensitive System inverted fork; fully adjustable
Rear suspension	Monocross rear suspension system	KYBÂ® single shock; fully adjustable

Other years 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail98%

Cornering85%

City riding5%

Daily riding8%

Touring8%

Two-up0%

Track90%

Best for: Built purely for motocross track riding and competitive off-road racing, not for general transportation.
Built for: A 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 for: Not suitable for commuting, highway travel, passengers, or riders wanting plush comfort and low-maintenance simplicity.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 976mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2018 Yamaha YZ250, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 249.0 ccm
Power: 24.9 HP (18.3 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.2588 HP/kg (dry)
Bore x stroke: 66.4 x 72.0 mm
Compression: 10.6:1
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric
Ignition: CDI
Valves per cylinder: 1
Lubrication system: Premix

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Multiplate, wet

Dimensions & weight

Wheelbase: 1481 mm
Overall length: 2147 mm
Overall width: 827 mm
Overall height: 1299 mm
Seat height: 976 mm
Dry weight: 96.2 kg
Wet weight: 103.0 kg
Fuel capacity: 8.00 litres
Ground clearance: 367 mm
Oil capacity: 0.80 litres

Chassis & suspension

Frame: Semi-double cradle aluminium
Front suspension: KYBÂ® Speed-Sensitive System inverted fork; fully adjustable
Rear suspension: KYBÂ® single shock; fully adjustable
Front wheel travel: 300 mm
Rear wheel travel: 315 mm
Rake (fork angle): 27.7°
Trail: 122 mm