| MODEL | TM RACING MX 450 FI 4T 2023 |
| Year | 2023 |
| Engine Type | Single cylinder, four-stroke, DOHC, 4 valves per cylinder, titanium valves |
| Displacement / Capacity | 449 cc / 27.4 cu in |
| Bore X Stroke | 95 x 63.4 mm / 3.7 x 2.5 in |
| Compression Ratio | — |
| Cooling System | Liquid |
| Max Power | — |
| Max Torque | — |
| Ignition | Kokusan, ECU |
| Induction | Fuel injection, 44 mm throttle body |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump with 2 pumps |
| Gear Box | 5-speed |
| Clutch | Multi-disc, oil bath, hydraulic control |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium deltabox-type single beam |
| Front Suspension | Kayaba 48 mm USD fork, 310 mm / 12.2 in travel |
| Rear Suspension | TM Racing monoshock, 300 mm / 11.8 in travel |
| Front Brakes | Single 270 mm / 10.6 in disc, Brembo |
| Rear Brakes | Single 245 mm / 9.6 in disc, Nissin |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 1000 mm / 39.4 in |
| Wheelbase | — |
| Ground Clearance | 360 mm / 14.2 in |
| Dry Weight | 107.5 kg / 237 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 80/100-21 |
| Rear Tyre | 110/90-19 |
| FUEL SYSTEM | |
| Fuel Capacity | 7.5 Litres / 2 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The fuel-injected 450 motocrosser as sold for 2023: aluminium single-beam chassis, Kayaba fork and push-button start, in TM's usual blue and white.
