| MODEL | TM RACING 250FI 4T MX 2017 |
| Year | 2017 |
| Engine Type | Single cylinder, four-stroke, DOHC, titanium valves |
| Displacement / Capacity | 249.5 cc / 15.22 cu in |
| Bore X Stroke | 77.0 x 53.6 mm / 3.0 x 2.1 in |
| Compression Ratio | — |
| Cooling System | Liquid |
| Max Power | — |
| Max Torque | — |
| Ignition | Kokusan generator, Microtec electronic |
| Induction | Fuel injection |
| Start System | Electric and kick |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump with double rotor pump |
| Gear Box | 5-speed |
| Clutch | Multi-disc in oil bath, hydraulic control |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Perimetral aluminium section |
| Front Suspension | Kayaba USD |
| Rear Suspension | TM Racing |
| Front Brakes | Single wave disc, 270 mm / 10.6 in |
| Rear Brakes | Single wave disc, 245 mm / 9.6 in |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | — |
| Rear Tyre | 100/90-19 |
| FUEL SYSTEM | |
| Fuel Capacity | 8.2 Litres / 2.17 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 2017 250Fi MX is TM's fuel-injected four-stroke quarter-litre motocross machine. It shares its DOHC titanium-valve engine and aluminium perimeter frame with the enduro version, but with a five-speed gearbox and a 19-inch rear wheel for the track.
