Built around Suzuki's enduro - offroad motorcycle platform, the 2018 Suzuki RMX450Z pairs a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 96.0 x 62.1 mm (3.8 x 2.4 inches) with a 11.6:1 compression ratio.
On the scales, the RMX450Z measures 123.5 kg (272 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 950 mm (37.4 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,495 mm (58.9 in) wheelbase engineered for balanced agility and highway composure. The 6.2-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Suzuki archive, this model family spans 11 indexed model years from 2010 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
950 mm (37.4 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsAluminum cylinder with Suzuki Composite Electrochemical Material (SCEM) coating
Compression11.6:1
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Valves/Cylinder4
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionCDI
LubricationSuzuki Advanced Sump System
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionInverted telescopic, coil spring, oil damped, adjustable damping force
Rear SuspensionLink type, coil spring, oil damped, adjustable spring preload and damping force
Wheelbase1495 mm (58.9 inches)
Ground Clearance320 mm (12.6 inches)
Wheels & Brakes
Front Tyre80/100-21
Rear Tyre110/100-18
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Weight incl.123.5 kg (272.3 pounds)
Seat Height950 mm (37.4 inches) If adjustable, lowest setting.
Overall Height1260 mm (49.6 inches)
Overall Length2185 mm (86.0 inches)
Overall Width830 mm (32.7 inches)
Fuel Capacity6.20 litres (1.64 US gallons)
Other
StarterElectric & kick
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.
