Motocross Bikes
2018Suzuki RM-Z450
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The 2018 Suzuki RM-Z450 is a competitive 450cc motocross bike designed for intermediate to advanced riders seeking race-ready performance. Known for its aggressive power delivery and nimble handling characteristics, it excels in both high-speed acceleration and technical terrain navigation. The liquid-cooled engine and sophisticated rear suspension deliver the responsiveness demanded by serious MX competitors.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 101.5 kg
- Seat height
- 960 mm
- Power
- 56.0 HP (41.2 kW)
What’s new for the 2018 Suzuki RM-Z450
vs the 2017| Spec | 2017 | 2018 |
|---|---|---|
| Seat height | 955 mm (37.6 inches) | 960 mm (37.8 inches) |
| Fuel capacity | 6.20 litres (1.64 US gallons) | 6.30 litres (1.66 US gallons) |
| Front suspension | Inverted telescopic SFF-Air suspension | Inverted telescopic, coil spring, oil damped, adjustable damping force |
| Rear suspension | Showa link type, coil spring, oil damped | BFRC - link type, coil spring, oil damped, adjustable spring preload and damping force |
| Wheelbase | 1495 mm (58.9 inches) | 1480 mm (58.3 inches) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross track and off-road competition, not for street or commuting use.
- Built for
- A raw, high-revving, single-cylinder motocross machine that rewards aggressive riding with sharp handling and explosive acceleration out of corners.
- Not ideal for
- Not suitable for beginners, passengers, daily road commuting, or anyone seeking comfort or long-distance touring capability.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 449.0 ccm
- Power
- 56.0 HP (41.2 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.5517 HP/kg
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Kick
- Ignition
- Electronic
- Valves per cylinder
- 4
- Lubrication system
- Semi-dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multi-plate rack-and-pinion clutch
Dimensions & weight
- Wheelbase
- 1480 mm
- Overall length
- 2175 mm
- Overall width
- 835 mm
- Overall height
- 1260 mm
- Seat height
- 960 mm
- Dry weight
- 101.5 kg
- Wet weight
- 112.0 kg
- Fuel capacity
- 6.30 litres
- Ground clearance
- 330 mm
Chassis & suspension
- Frame
- Aluminum alloy, twin-spar
- Front suspension
- Inverted telescopic, coil spring, oil damped, adjustable damping force
- Rear suspension
- BFRC - link type, coil spring, oil damped, adjustable spring preload and damping force
- Front wheel travel
- 310 mm
- Rear wheel travel
- 310 mm
- Rake (fork angle)
- 29.8°
- Trail
- 130 mm
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Other
- Color options
- Championship Yellow with black/blue accents
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2008 | 2013 | 2017 | 2018 | 2021 | 2025 |
|---|---|---|---|---|---|---|
| Capacity | 449.00 ccm (27.40 cubic inches) | 449.00 ccm (27.40 cubic inches) | 449.0 ccm (27.40 cubic inches) | 449.0 ccm (27.40 cubic inches) | 449.0 ccm (27.40 cubic inches) | 449.0 ccm (27.40 cubic inches) |
| Dry weight | 101.5 kg (223.8 pounds) | — | — | — | — | — |
| Seat height | 955 mm (37.6 inches) | 955 mm (37.6 inches) | 955 mm (37.6 inches) | 960 mm (37.8 inches) | 960 mm (37.8 inches) | 960 mm (37.8 inches) |
| Fuel capacity | 6.20 litres (1.64 gallons) | 6.20 litres (1.64 gallons) | 6.20 litres (1.64 gallons) | 6.30 litres (1.66 gallons) | 6.30 litres (1.66 US gallons) | 6.30 litres (1.66 US gallons) |
| Color options | Yellow | Champion Yellow | Champion Yellow No.2/Solid Black | Championship Yellow with black/blue accents | Championship Yellow/Blue | Champion Yellow |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Suzuki RM-Z450?
The 2018 Suzuki RM-Z450 has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Suzuki RM-Z450 have?
The 2018 Suzuki RM-Z450 has a Power of 56.0 HP (41.2 kW).
How many gears does the Suzuki RM-Z450 have?
The 2018 Suzuki RM-Z450 has a Gearbox of 5-speed.
How much does the Suzuki RM-Z450 weigh?
The 2018 Suzuki RM-Z450 has a Dry weight of 101.5 kg (223.8 pounds).
Shop this bike
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The 2018 Suzuki RM-Z450 is a top-of-the-line motocross bike that offers powerful performance and a sleek design. With its fuel-injected, 449cc engine, this motorcycle delivers exceptional acceleration and speed, making it a great choice for experienced riders. The bike's lightweight frame and high-performance suspension system provide excellent handling and maneuverability on the track. Additionally, the RM-Z450 comes equipped with advanced braking technology for added safety and control, making it a versatile and reliable option for adrenaline-pumping motocross adventures.
Overall, the 2018 Suzuki RM-Z450 is an impressive motocross bike that delivers high-quality performance and a stylish look. Whether you're a seasoned rider or a newcomer to the sport, this motorcycle offers an exhilarating ride with its powerful engine, responsive handling, and advanced safety features. If you're looking for a top-tier motocross bike that combines speed, agility, and durability, the RM-Z450 is definitely worth considering for your next off-road adventure.
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