14 August. Friday 2026
TM Racing MX 450 Fi 4T - 2023 Specifications and Reviews
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.
General information | |
| Price as new | 3.2 Check out the detailed rating of off-road capabilities, engine performance, maintenance cost, etc. Compare with any other bike. |
| Category | Cross / motocross |
| Year | 2023 |
| Model | TM Racing MX 450 Fi 4T |
| | |
Engine and Transmission Specifications | |
| Clutch | Multiuple-disk in oil-bath with hydaulic control |
| Transmission type | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Lubrication system | Dry sump with 2 pumps |
| Ignition | Kokusan, ECU |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. 44 mm throttle body |
| Valves per Cylinder | 4 |
| Bore x Stroke | 95.0 x 63.4 mm (3.7 x 2.5 inches) |
| Engine details | Titanium valves |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 449.0 ccm (27.40 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Wire spoked, blue rims |
| Rear brakes | Single disc. Nissin |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc. Brembo |
| Rear tire | 110/90-19 |
| Front tire | 80/100-21 |
| Rear wheel travel | 300 mm (11.8 inches) |
| Rear Suspension | TM Racing monoshock |
| Front wheel travel | 310 mm (12.2 inches) |
| Front Suspension | Kayaba Ø 48 mm |
| Rake (fork angle) | 27.0° |
| Frame type | Self-tempering aluminium deltabox type single beam with extruded, forged and microcast parts |
| | |
Physical measures and capacities | |
| Fuel capacity | 7.50 litres (1.98 US gallons) |
| Ground clearance | 360 mm (14.2 inches) |
| Seat height | 1,000 mm (39.4 inches) If adjustable, lowest setting. |
| Dry weight | 107.5 kg (237.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Italian brand. |
| Starter | Electric |
| Color options | Blue/white |
Performance Profile & Rider Fit
Best For
Track80%
City75%
Cornering92%
Daily Riding35%
Touring15%
Passenger10%
Rider Profile
| Best For | Note: the specifications provided are for a TM Racing SMR 125 Fi 2T supermoto, not the named MX 450 Fi 4T motocrosser, so this profile actually describes a lightweight 125cc two-stroke street-legal supermoto rather than a 450 four-stroke off-road bike; th |
| Purpose | Built for sharp, playful cornering on tarmac and tight technical circuits rather than long-distance travel or hauling gear. |
| Rider Fit | Extremely light dry weight and a tall seat height reward an agile, confident rider but can feel twitchy and demanding for beginners or shorter riders. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
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.Add a Comment
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