Built around Suzuki's cross - motocross motorcycle platform, the 2009 Suzuki RM-Z450 features a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke configuration. Internal engine geometry specifies a bore and stroke of 96.0 x 62.1 mm (3.8 x 2.4 inches) with a 12.2:1 compression ratio.
On the scales, the RM-Z450 measures 112 kg (247 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 1,480 mm (58.3 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 17 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
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression12.2:1
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Fuel SystemInjection
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionElectronic ignition (
LubricationSemi Dry sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic, coil spring, oil damped
Rear SuspensionLink type, coil spring, oil damped
Wheelbase1480 mm (58.3 inches)
Ground Clearance350 mm (13.8 inches)
Wheels & Brakes
Front Tyre80/90-21
Rear Tyre110/90-19
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Weight incl.112.0 kg (246.9 pounds)
Seat Height955 mm (37.6 inches) If adjustable, lowest setting.
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.
