| MODEL | TM RACING MX 250 2005 |
| Year | 2005 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 249.0 cc / 15.19 cu in |
| Bore X Stroke | 66.4 x 72.0 mm / 2.6 x 2.8 in |
| Compression Ratio | 15.5:1 |
| Cooling System | Liquid |
| Max Power | — |
| Max Torque | — |
| Ignition | Kokusan CDI, variable advance |
| Induction | Keihin PWM 38 carburettor |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | Multiple-disc, oil bath, hydraulic control |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Cr-Mo steel, perimetral oval section |
| Front Suspension | Kayaba/Paioli 48 mm USD fork |
| Rear Suspension | Ohlins |
| Front Brakes | Single disc, 270 mm / 10.6 in |
| Rear Brakes | Single 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 | 100/90-21 |
| Rear Tyre | 110/90-19 |
| FUEL SYSTEM | |
| Fuel Capacity | 8 Litres / 2.11 US gal |
| Fuel Consumption | — |
| Top Speed | — |
A 249 cc liquid-cooled two-stroke motocrosser, the largest two-stroke in TM's MX range. The 2005 bike came with a Paioli-branded fork and an Ohlins shock.
