At the heart of the 2018 Suzuki RM-Z250 cross - motocross motorcycle, Suzuki features a 249 cc (15.2 cu in) liquid-cooled single cylinder, four-stroke configuration. Internal engine geometry specifies a bore and stroke of 77.0 x 53.6 mm (3.0 x 2.1 inches) with a 13.5:1 compression ratio.
On the scales, the RM-Z250 measures 106 kg (234 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 1,475 mm (58.1 in) wheelbase engineered for balanced agility and highway composure. The 6.5-liter (1.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Suzuki archive, this model family spans 18 indexed model years from 2008 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
955 mm (37.6 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsAluminum cylinder with Suzuki Composite Electrochemical Material (SCEM) coating
Compression13.5:1
Bore x Stroke77.0 x 53.6 mm (3.0 x 2.1 inches)
Valves/Cylinder4
Fuel SystemInjection. 44mm throttle body
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionElectronic
LubricationSemi-dry sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
DrivelineChain, DID520DMA4, 114 links
Performance
ExhaustRevised muffler meets AMA sound standards.
Chassis
Front SuspensionInverted telescopic, pneumatic spring, oil damped, adjustable damping force
Rear SuspensionLink type, coil spring, oil damped, adjustable spring preload and damping force
Wheelbase1475 mm (58.1 inches)
Ground Clearance345 mm (13.6 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre100/90-19
Front BrakesSingle disc
Rear BrakesSingle disc
WheelsAluminum rims with stainless steel spokes
Dimensions & Weight
Weight incl.106.0 kg (233.7 pounds)
Seat Height955 mm (37.6 inches) If adjustable, lowest setting.
Overall Height1270 mm (50.0 inches)
Overall Length2170 mm (85.4 inches)
Overall Width830 mm (32.7 inches)
Fuel Capacity6.50 litres (1.72 US gallons)
Other
StarterKick
Color OptionsChampionship Yellow with black/blue accents
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.
