Suzuki RM-Z450 2023
Motocross / Racing
449cc
4-stroke
247lb
wet weight
37.8in
Seat height
12in
Front travel
5spd
Gearbox
The machine
The 2023 Suzuki RM-Z450 is a 449cc four-stroke motocross bike with a high-compression DOHC engine, fuel injection, and a five-speed transmission. Its controls include Suzuki Holeshot Assist Control (S-HAC) for race starts, a kick starter, and adjustable front and rear suspension damping. The 6.3-liter fuel tank and rider-only design suit closed-course motocross use rather than carrying a passenger or relying on a built-in side stand.
You can adjust the front fork’s compression and rebound damping, as well as its oil quantity, for rider preference and track conditions. The fork’s standard settings are nine clicks out for compression and 11 clicks out for rebound.
Who should ride it
This bike is for motocross riders who want a full-size 450-class machine for track practice and racing, including riders who can make use of its starting-gate S-HAC system and suspension adjustments. Its four-stroke engine and race-focused controls call for sound throttle, clutch, and gearshift technique. Newer motocross riders should first build their skills in a suitable setting and ride within their ability; it is not designed for passengers or casual street use.
Garage
Tech specs
- Displacement
- 449cc
- Stroke
- 4-stroke
- Fuel system
- Fuel injection
- Bore × stroke
- 96 × 62.1 mm
- Compression
- 12.5:1
- Cooling
- Liquid
- Configuration
- Single-cylinder
- Valve train
- DOHC
- Oil chamber
- Single
- Engine oil
- 1.1 L
- Oil type
- 10W-40
- Coolant
- 1.1 L
- Type
- Wet multiplate
- Actuation
- Cable
- Assist
- Manual
- Starting
- Kick
- Transmission
- 5-speed
- Chain size
- 520
- Chain links
- 114
- Front sprocket
- 13T
- Rear sprocket
- 50T
- Wet weight
- 247 lb
- Seat height
- 37.8″
- Ground clearance
- 13″
- Wheelbase
- 58.3″
- Width
- 32.9″
- Height
- 49.6″
- Fuel capacity
- 1.66 gal
- Rake
- 27.8°
- Trail
- 4.72″
- Front
- Inverted telescopic fork, coil spring, oil damped
- Front travel
- 12″
- Rear
- Link-type shock, coil spring, oil damped
- Rear travel
- 12.4″
- Front wheel
- 21″
- Rear wheel
- 19″
- Front tire
- 80/100-21 51M, tube type
- Rear tire
- 110/90-19 62M, tube type
- Map switch
- No
- Skid plate
- Yes
- Radiator fan
- No
- Street legal
- No
- Battery
- No
Pit-lane questions
- 01
What engine does the 2023 Suzuki RM-Z450 have?
It has a 449cc four-stroke, high-compression DOHC engine with fuel injection.
- 02
How many gears does the 2023 RM-Z450 have?
It has a five-speed transmission. Neutral is between first and second gear.
- 03
How much fuel does the 2023 Suzuki RM-Z450 hold?
The fuel tank capacity is 6.3 liters, or 1.66 US gallons.
- 04
Does the 2023 RM-Z450 have electric start?
It uses a kick starter lever to start the engine.
- 05
What is S-HAC on the 2023 Suzuki RM-Z450?
S-HAC, or Suzuki Holeshot Assist Control, assists with starts from a race starting gate.
- 06
Does the 2023 RM-Z450 come with a side stand?
It is not equipped with a built-in side stand. An accessory side stand is supplied for temporary support and should be removed before riding.
- 07
Can you adjust the suspension on the 2023 RM-Z450?
Yes. The front fork’s compression and rebound damping and oil quantity are adjustable, and the rear suspension has compression and rebound adjusters.
- 08
What are the standard front fork settings on the 2023 RM-Z450?
The standard settings are nine clicks counterclockwise from fully clockwise for compression damping and 11 clicks counterclockwise for rebound damping.
- 09
Can the 2023 Suzuki RM-Z450 carry a passenger?
No. Suzuki RM-Z motorcycles are designed for the rider only.