| Model | TM Racing MX250ES 2T (TM Moto MX 250 ES) |
| Year | 2027 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, 2-stroke |
| Weight | 95 kg dry (2026 published specification; 2027 confirmation pending) |
| Displacement | 249.3 cc |
| Bore x Stroke | 66.4 x 72.0 mm |
| Compression Ratio | |
| Fuel System | Keihin PWK 38 mm carburettor | Replacement Options |
| Ignition | eMoticom electronic ignition and ECU; revised mapping for 2027 |
| Spark Plug | NGK BKR8EIX (2019-onward TM 250/300 2T specification) |
| Spark Plug Gap | 0.7 mm |
| Cooling System | Liquid-cooled |
| Starting System | Electric start; optional kick-start |
| Transmission | 5-speed manual; optional 6-speed gearbox |
| Clutch | Hydraulically operated, multi-plate wet clutch; revised open-clutch design introduced for 2026 |
| Final Drive | Chain |
| Overall Length | |
| Overall Width | |
| Overall Height | |
| Wheelbase | |
| Ground Clearance | 360 mm (2026 published specification) |
| Seat Height | 985 mm (2026 published specification) |
| Fuel Capacity | 9.0 litres; optional 12.0-litre tank |
| Frame | Self-tempering aluminium Deltabox-type single-beam frame with extruded, forged and microcast components |
| Front Tyre | | Tyre Size Guide |
| Rear Tyre | | Tyre Size Guide |
| Front Suspension | 48 mm KYB upside-down telescopic forks; revised 2027 settings | Fork Oil Levels |
| Front Suspension Travel | 310 mm (2026 published specification) |
| Rear Suspension | TM Moto rear monoshock with linkage; revised 2027 settings |
| Rear Suspension Travel | 300 mm (2026 published specification) |
| Fork Oil | KYB 48 mm fork-specific suspension oil; exact 2027 oil grade, chamber quantity and oil-height settings not independently confirmed |
| Front Brake | 270 mm hydraulic disc with Brembo caliper |
| Rear Brake | 240 mm hydraulic disc with Nissin caliper |
| Front Wheel Size | 21-inch spoked wheel |
| Rear Wheel Size | 19-inch spoked wheel |
| Fuel Type | Premium unleaded petrol; minimum 97 RON recommended by TM UK |
| Premix Information | 33:1 petrol-to-oil ratio (approximately 30 ml of suitable synthetic 2-stroke oil per litre of petrol) | Premix Calculator |
| Gearbox Oil | Motorex Cross Power 4T SAE 10W-40 or 10W-50, required by TM UK for 2026-onward two-stroke MX models with the revised open clutch. Published 2019-onward 250/300 gearbox capacity: 650 ml; confirm 2027 fill quantity against the factory manual. |
| Air Filter | Washable, oiled foam air-filter element |
| Service Notes | The 2027 MX 250 ES 2T is confirmed in the TM Moto Japan model range and US dealer listings. This is the carburettor-equipped MX 250 ES, not the separate MX 250 ES Fi fuel-injected model. The official Japanese 2027 listing currently carries forward 2026 technical specifications pending updates. Standard equipment includes electric start, a five-speed gearbox and Keihin PWK 38 mm carburettor, with kick-start and six-speed gearbox available as options. TM's 2027 updates include revised ECU mapping and suspension settings. NGK BKR8EIX spark plug with 0.7 mm gap is specified
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