Suzuki RM-Z450 - 2023 Specifications and Reviews

The 2023 Suzuki RM-Z450 is a competitive motocross machine designed for intermediate to advanced riders seeking aggressive trail and off-road performance. Powered by a liquid-cooled 449cc four-stroke single-cylinder engine with fuel injection, it delivers strong mid-range power and reliable acceleration. Best known for its responsive handling and durable construction, the RM-Z450 excels in both recreational riding and competitive racing environments.

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General information

CategoryCross / motocross
Year2023
ModelSuzuki RM-Z450

Engine and Transmission Specifications

DrivelineConstant-mesh
ClutchWet, multi-plate
Transmission typeChain   (final drive)
Gearbox5-speed
Cooling systemLiquid
Lubrication systemSemi-dry sump
IgnitionCDI
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
Fuel systemInjection. 44mm throttle body
Valves per Cylinder4
Bore x Stroke96.0 x 62.1 mm (3.8 x 2.4 inches)
Compression12.5:1
Engine detailsAluminum cylinder with Suzuki Composite Electrochemical Material (SCEM) coating
Engine typeSingle cylinder, four-stroke
Capacity:449.0 ccm (27.40 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsBlack anodized rims with a cross-section. Bridgestone X30 tires.
Rear brakesSingle disc
Diameter270 mm (10.6 inches)
Front brakesSingle disc
Rear tire110/90-19
Front tire80/100-21
Rear SuspensionBFRC-link type, coil spring, oil damped, adjustable spring preload and damping force
Front SuspensionInverted telescopic, coil spring, oil damped, adjustable damping force
Frame typeAluminum alloy, twin-spar

Physical measures and capacities

Fuel capacity6.30 litres (1.66 US gallons)
Wheelbase1480 mm (58.3 inches)
Ground clearance330 mm (13.0 inches)
Overall width835 mm (32.9 inches)
Overall length2175 mm (85.6 inches)
Overall height1260 mm (49.6 inches)
Seat height960 mm (37.8 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc112.0 kg (246.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsTraction management system
Factory warrantyNo warranty
StarterKick
Color optionsChampion Yellow/Blue

Maintenance and service data

Chain links114
Chain size520

Performance Profile & Rider Fit

Best For

Track85%
City5%
Cornering88%
Daily Riding10%
Touring5%
Passenger0%

Rider Profile

Best ForThis bike suits experienced off-road and motocross riders comfortable with a tall seat height, aggressive power delivery, and no electric start.
PurposeBuilt purely for motocross track and off-road competition, not for street or commuting use.
Rider FitDemands strong physical fitness, core strength, and good bike control due to its tall stance, firm suspension, and kick-start operation.
CharacterA raw, high-revving, single-cylinder motocross machine that rewards aggressive riding with sharp handling and explosive acceleration out of corners.
Not Ideal ForNot suitable for beginners, passengers, daily road commuting, or anyone seeking comfort or long-distance touring capability.

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

Rider Fit Visualizer

2023 Suzuki RM-Z450 Rider Ergonomics Assessment

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Feet:

At 960mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2023 Suzuki RM-Z450, 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
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MotorcycleDB Review

The 2023 Suzuki RM-Z450 is a powerful and agile motocross bike that is sure to impress riders of all skill levels. With its state-of-the-art engine and advanced suspension system, this bike is designed to provide top-notch performance on the track. The sleek and modern design of the RM-Z450 is also sure to turn heads, making it a standout choice for motocross enthusiasts. One of the standout features of the 2023 Suzuki RM-Z450 is its innovative fuel injection system, which ensures smooth and responsive power delivery. Additionally, the bike's lightweight chassis and superb handling make it a joy to ride, offering precision and control in every corner. Whether you're a professional racer or a weekend warrior, the 2023 Suzuki RM-Z450 is a motocross bike that is sure to deliver an exhilarating riding experience.
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