Motocross Bikes
2023TM racing TM Racing MX 450 Fi 4T
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The 2023 TM Racing MX 450 Fi 4T is a competitive motocross machine engineered for serious off-road racers seeking high-performance reliability. Its fuel-injected 449cc single-cylinder four-stroke engine delivers responsive power with titanium valves and DOHC technology, while advanced features like dry sump lubrication and liquid cooling ensure durability in demanding racing conditions. Best known for its lightweight construction and precise handling, it excels for intermediate to advanced riders competing in professional motocross events.
- Capacity
- 449.0 ccm
- Engine
- Single single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 107.5 kg
- Seat height
- 1000 mm
- Power
- 56.0 HP
What’s new for the 2023 TM racing TM Racing MX 450 Fi 4T
vs the 2022| Spec | 2022 | 2023 |
|---|---|---|
| Weight | — | 107.5 kg (237.0 pounds) |
| Seat height | — | 1000 mm (39.4 inches) |
| Gearbox | 6-speed | 5-speed |
| Front suspension | USD 48mm Kayana | Kayaba Ø 48 mm |
| Front brakes | Single disc. Wave disk with Nissin pump and caliper | Single disc. Brembo |
| Rear brakes | Single disc. Wave disk with Nissin pump and caliper | Single disc. Nissin |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for sharp, playful cornering on tarmac and tight technical circuits rather than long-distance travel or hauling gear.
- Built for
- A high-strung, race-bred Italian exotic that favors flickable agility and revvy two-stroke punch over comfort or all-round practicality.
- Not ideal for
- Not a good fit for riders wanting a relaxed daily commuter, a touring companion, or any kind of serious off-road 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
- Engine type
- Single single, four-stroke
- Power/weight ratio
- 0.5209 HP/kg
- Bore x stroke
- 95.0 x 63.4 mm
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric & kick
- Ignition
- Kokusan, ECU
- Valves per cylinder
- 4
- Lubrication system
- Dry sump with 2 pumps
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Clutch
- Multiuple-disk in oil-bath with hydaulic control
Dimensions & weight
- Seat height
- 1000 mm
- Dry weight
- 107.5 kg
- Fuel capacity
- 7.50 litres
- Ground clearance
- 360 mm
Chassis & suspension
- Frame
- Self-tempering aluminium deltabox type single beam with extruded, forged and microcast parts
- Front suspension
- Kayaba Ø 48 mm
- Rear suspension
- TM Racing monoshock
- Front wheel travel
- 310 mm
- Rear wheel travel
- 300 mm
- Rake (fork angle)
- 27.0°
Brakes & wheels
- Front brakes
- Single disc. Brembo
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc. Nissin
- Front tyre
- 80/100-21
- Rear tyre
- 110/90-19
Other
- Color options
- Blue/white
- Comments
- Italian brand.
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 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|
| Capacity | 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) | 449.0 ccm (27.40 cubic inches) |
| Dry weight | — | — | — | 107.5 kg (237.0 pounds) | 107.5 kg (237.0 pounds) |
| Seat height | — | — | — | 1,000 mm (39.4 inches) | — |
| Fuel capacity | 7.50 litres (1.98 US gallons) | 7.50 litres (1.98 US gallons) | 7.50 litres (1.98 US gallons) | 7.50 litres (1.98 US gallons) | 7.50 litres (1.98 US gallons) |
| Color options | Blue/white | Blue/white | Blue/white | Blue/white | Blue/white |
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 TM racing TM Racing MX 450 Fi 4T?
The 2023 TM racing TM Racing MX 450 Fi 4T has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the TM racing TM Racing MX 450 Fi 4T have?
The 2023 TM racing TM Racing MX 450 Fi 4T has a Power of 56.0 HP.
How many gears does the TM racing TM Racing MX 450 Fi 4T have?
The 2023 TM racing TM Racing MX 450 Fi 4T has a Gearbox of 5-speed.
How much does the TM racing TM Racing MX 450 Fi 4T weigh?
The 2023 TM racing TM Racing MX 450 Fi 4T has a Dry weight of 107.5 kg (237.0 pounds).
Shop this bike
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The 2023 TM Racing MX 450 Fi 4T is a powerful and reliable dirt bike that is sure to impress riders of all skill levels. With its fuel-injected 450cc engine, this bike delivers smooth and consistent power, making it perfect for tackling the toughest of off-road tracks. The high-quality components and attention to detail in the design make for a bike that is both durable and agile, providing riders with a confidence-inspiring ride.
One of the standout features of the 2023 TM Racing MX 450 Fi 4T is its exceptional handling and suspension. The bike's balanced and responsive chassis ensures that riders can take on obstacles with ease, while the top-of-the-line suspension system provides a smooth and controlled ride over any terrain. Whether you're a competitive racer or just a weekend warrior, the 2023 TM Racing MX 450 Fi 4T is a top choice for anyone seeking a high-performance dirt bike that can take on the most demanding conditions.
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