Motocross Bikes
2025Suzuki RM-Z450
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The 2025 Suzuki RM-Z450 is a competitive motocross machine designed for intermediate to advanced riders seeking reliability and performance on the track. Powered by a liquid-cooled 449cc four-stroke single-cylinder engine with fuel injection, it delivers consistent power and precise throttle response. Known for its proven engineering and agile handling, the RM-Z450 remains a formidable choice in the 450cc motocross class.
- 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 2025 Suzuki RM-Z450
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Fuel capacity | 6.20 litres (1.64 US gallons) | 6.30 litres (1.66 US gallons) |
| Front suspension | Telescopic, coil spring, oil damped | Inverted telescopic, coil spring, oil damped, adjustable damping force |
| Rear suspension | Link type, coil spring, oil damped | BFRC-link type, coil spring, oil damped, adjustable spring preload and damping force |
| Compression | 12.2:1 | 12.5:1 |
Other years
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
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 (dry)
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Kick
- Ignition
- CDI
- Valves per cylinder
- 4
- Lubrication system
- Semi-dry sump
- Spark plugs
- NGK DIMR8C10
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multi-plate
- Chain size
- 520
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
- Champion Yellow
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 | 2005 | 2011 | 2016 | 2022 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc |
| Dry weight | 101 kg | 102 kg | 102 kg | 102 kg | 102 kg | 102 kg |
| Seat height | 995 mm | 955 mm | 955 mm | 960 mm | 960 mm | 960 mm |
| Fuel capacity | 7 L | 6.2 L | 6.2 L | 6.3 L | 6.3 L | 6.3 L |
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 2025 Suzuki RM-Z450 has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Suzuki RM-Z450 have?
The 2025 Suzuki RM-Z450 has a Power of 56.0 HP (41.2 kW).
How many gears does the Suzuki RM-Z450 have?
The 2025 Suzuki RM-Z450 has a Gearbox of 5-speed.
How much does the Suzuki RM-Z450 weigh?
The 2025 Suzuki RM-Z450 has a Dry weight of 101.5 kg (223.8 pounds).
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