2027 TM Racing MX300ESFI
General Specifications
| Model | TM Racing MX300ESFI 2T (TM Moto MX 300 ES Fi) |
| Year | 2027 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, electronically fuel-injected 2-stroke |
| Weight | 97 kg dry (published 2027 listing carries forward 2026 specification) |
Engine
| Displacement | 293.2 cc |
| Bore x Stroke | 72.0 x 72.0 mm |
| Compression Ratio | |
| Fuel System | Electronic fuel injection with TM Moto throttle body; 39 mm throttle body listed for the 2026 model |
| Ignition | Electronic ignition with eMoticom ECU |
| Spark Plug | NGK BKR8EIX (TM UK service reference for 2019-onward 250/300cc two-stroke models; verify 2027 EFI fitment) |
| Spark Plug Gap | 0.7 mm (TM UK service reference; verify 2027 requirement) |
| Cooling System | Liquid-cooled |
| Starting System | Electric start standard; optional kick-start |
Transmission
| Transmission | 5-speed manual; optional 6-speed gearbox |
| Clutch | Hydraulically operated multi-plate wet clutch; revised clutch design introduced for 2026 |
| Final Drive | Regina GPX chain drive |
Dimensions
| Overall Length | |
| Overall Width | |
| Overall Height | |
| Wheelbase | |
| Ground Clearance | 360 mm |
| Seat Height | 985 mm |
| Fuel Capacity | 9.0 litres standard; optional 12.0-litre tank |
Chassis
| Frame | Self-tempering aluminium Deltabox-type single-beam frame incorporating extruded, forged and microcast components |
| Front Tyre | 80/100-21 (published 2026 MX300 fitment; verify 2027 OEM tyre) | Tyre Size Guide |
| Rear Tyre | 110/90-19 (published 2026 MX300 fitment; verify 2027 OEM tyre) | Tyre Size Guide |
Suspension
| Front Suspension | 48 mm KYB Air-Oil Separate (AOS) inverted closed-cartridge coil-spring forks, adjustable compression and rebound damping | Fork Oil Levels |
| Front Suspension Travel | 310 mm |
| Rear Suspension | TM Moto linkage-operated monoshock, adjustable spring preload, compression and rebound damping |
| Rear Suspension Travel | 300 mm |
| Fork Oil | KYB-compatible suspension fork oil; exact 2027 oil specification, cartridge quantities and outer-chamber levels not confirmed |
Brakes & Wheels
| 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 |
Service Data
| Fuel Type | Premium unleaded petrol; minimum 97 RON recommended in TM UK two-stroke service guidance |
| Premix Information | Electronic fuel injection with separate oil-injection system described for earlier MX300ESFI models. Confirm the 2027 lubrication-system configuration and use the specified injector-compatible two-stroke oil. Do not apply a fixed premix ratio without verifying the factory instructions. |
| Gearbox Oil | Motorex Cross Power 4T SAE 10W-40 or 10W-50 recommended in TM UK guidance for 2026-onward two-stroke MX clutch systems. Earlier 250/300cc gearbox service capacity: 650 ml; confirm the 2027 fill quantity before servicing. |
| Air Filter | Washable, reusable oiled foam air-filter element |
| Service Notes | The 2027 TM Moto MX 300 ES Fi 2T is confirmed in the official TM Moto Japan 2027 motocross range. It is the 293.2cc electronically fuel-injected two-stroke motocross model, distinct from the carburettor-equipped MX 300 ES 2T and the MX 300 ES Fi 4T four-stroke. The Japanese distributor currently identifies its technical data as carried forward from 2026 pending model-year updates. Published equipment includes eMoticom ECU, TM Moto throttle body, electric starting, five-speed gearbox with optional six-speed transmission, hydraulic multi-plate wet clutch, 48 mm KYB forks and TM Moto rear shock. Front and rear suspension travel are 310 mm and 300 mm respectively. Earlier specialist information describes separate electronic fuel and oil injection, but the 2027 oil-delivery arrangement must be confirmed before refuelling. Check the factory owner's manual for approved oil, gearbox capacity, spark plug specifications and fork servicing quantities. Inspect the air filter, cooling system, chain, fuel-injection equipment, piston, exhaust power valve, electrical connections and suspension linkage at the prescribed maintenance intervals. |
2027 TM Racing MX300ESFI – Italian Fuel-Injected Two-Stroke Motocross
The 2027 TM Racing MX300ESFI continues the Italian manufacturer's specialist approach to high-performance two-stroke motocross. Now marketed under the TM Moto name, the MX 300 ES Fi combines a 293.2cc liquid-cooled engine with electronic fuel injection, electric starting and an aluminium chassis. It occupies a distinctive position in the motocross market, offering greater displacement than a conventional 250cc two-stroke without adopting the weight and mechanical characteristics of a four-stroke.
The 2027 motorcycle is a continuation of the established MX300ESFI platform rather than a confirmed complete redesign. TM Moto Japan lists the model in its 2027 range while retaining technical figures from the preceding year pending updated specifications. These include a 72 mm bore and stroke, eMoticom electronic engine management and a five-speed gearbox. A six-speed transmission and kick-start system are available as options.
Electronic fuel injection is one of the model's defining characteristics. Unlike the carburettor-equipped MX300ES, the ESFI uses electronically controlled fuel delivery through a TM Moto throttle body. Earlier examples also employed separate oil injection, although owners should verify the exact lubrication arrangement fitted to their motorcycle. Routine maintenance therefore includes attention to fuel-system components, electrical connections and the engine-management system alongside traditional two-stroke servicing. Owners investigating compatible components can consult the MXOwners motorcycle parts finder.
The aluminium Deltabox-style chassis combines 48 mm KYB inverted forks with a linkage-operated TM Moto rear shock. Published suspension travel remains 310 mm at the front and 300 mm at the rear. Correct rider sag, spring preload and damping adjustment are important for maintaining traction and stability under motocross conditions. The MXOwners rear suspension setup guide provides additional information about suspension adjustment.
For owners, regular inspection of the air filter, piston, exhaust power valve, cooling system and drive chain remains essential. The revised clutch design introduced for 2026 also makes correct gearbox lubricant selection important. Although the 2027 MX300ESFI remains closely related to the preceding model, its combination of electronic fuel injection, electric starting and traditional two-stroke performance continues to distinguish it from more conventional motocross machinery.