2027 TM Racing MX450ES-4T
General Specifications
| Model | TM Racing MX450ES-4T (TM Moto MX 450 ES Fi 4T) |
| Year | 2027 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, DOHC, 4-valve, 4-stroke engine |
| Weight | 106 kg without fuel (2026 factory specification carried forward in the 2027 listing) |
Engine
| Displacement | 449 cc |
| Bore x Stroke | 95.0 x 63.4 mm |
| Compression Ratio | |
| Fuel System | TM Moto electronic fuel injection with TM Moto throttle body |
| Ignition | Electronic ignition controlled by eMoticom ECU |
| Spark Plug | |
| Spark Plug Gap | |
| Cooling System | Liquid-cooled |
| Starting System | Electric start standard; optional kick-start |
Transmission
| Transmission | 5-speed manual gearbox |
| Clutch | Hydraulically operated, multi-plate wet clutch; updated clutch assembly for the 2026 generation |
| Final Drive | Regina GPX chain drive |
Dimensions
| Overall Length | |
| Overall Width | |
| Overall Height | |
| Wheelbase | |
| Ground Clearance | 360 mm |
| Seat Height | 1000 mm |
| Fuel Capacity | 7.5 litres |
Chassis
| Frame | Self-tempering aluminium Deltabox-type single-beam frame with extruded, forged and microcast components |
| Front Tyre | Maxxis Maxxcross MX-ST; exact 2027 tyre dimensions not confirmed | Tyre Size Guide |
| Rear Tyre | Maxxis Maxxcross MX-ST; exact 2027 tyre dimensions not confirmed | Tyre Size Guide |
Suspension
| Front Suspension | 48 mm KYB Air-Oil Separate (AOS) inverted closed-cartridge coil-spring forks with adjustable compression and rebound damping | Fork Oil Levels |
| Front Suspension Travel | 310 mm |
| Rear Suspension | TM Moto linkage-operated monoshock with adjustable spring preload, high- and low-speed compression damping and rebound damping |
| Rear Suspension Travel | 300 mm |
| Fork Oil | KYB-compatible suspension fork oil for 48 mm AOS closed-cartridge forks; exact 2027 oil viscosity, cartridge volume and outer-chamber fill quantities not confirmed |
Brakes & Wheels
| Front Brake | 270 mm hydraulic disc with Brembo two-piston caliper |
| Rear Brake | 240 mm hydraulic disc with Nissin single-piston caliper |
| Front Wheel Size | 21-inch spoked wheel |
| Rear Wheel Size | 19-inch spoked wheel |
Service Data
| Fuel Type | Premium unleaded petrol; confirm the minimum octane requirement against the 2027 factory manual |
| Premix Information | Not applicable. Four-stroke engine with internal oil lubrication; do not mix two-stroke oil into the petrol. |
| Gearbox Oil | Four-stroke motorcycle engine oil compatible with a wet multi-plate clutch. The gearbox shares the engine lubrication system. Exact 2027 oil grade, factory lubricant approval and refill quantity not independently confirmed. |
| Air Filter | Washable, oiled foam air-filter element |
| Service Notes | The 2027 TM Moto MX 450 ES Fi 4T is officially listed in the TM Moto Japan 2027 motocross range. The published technical table currently carries forward the 2026 specification pending updated model-year details. The motorcycle uses a 449cc liquid-cooled, fuel-injected four-stroke engine with a 95.0 mm bore, 63.4 mm stroke, eMoticom ECU and five-speed gearbox. Standard electric starting is supplemented by an optional kick-start mechanism. The engine features four valves operated by dual overhead camshafts. The 2026 model introduced an updated wet multi-plate clutch. Chassis equipment includes an aluminium Deltabox-type frame, 48 mm KYB AOS forks, TM Moto rear shock, Brembo front brake and Nissin rear brake. Published suspension travel is 310 mm front and 300 mm rear. The factory lists a 106 kg weight without fuel, 7.5-litre fuel capacity, 1000 mm seat height and 360 mm ground clearance. The 2026 motocross specification identifies Maxxis Maxxcross MX-ST tyres, but exact 2027 tyre dimensions remain unconfirmed. Verify the spark plug type and gap, engine oil specification and capacity, tyre dimensions and fork oil quantities against the 2027 factory service manual before carrying out maintenance. Inspect the air filter, engine oil, oil filter, valve clearances, cooling system, drive chain and suspension linkage at the manufacturer's specified competition service intervals. |
2027 TM Racing MX450ES-4T – Italian 450cc Motocross Performance
The 2027 TM Racing MX450ES-4T continues the Italian manufacturer's distinctive approach to high-performance four-stroke motocross. Officially marketed as the TM Moto MX 450 ES Fi 4T, the motorcycle combines a 449cc liquid-cooled engine, electronic fuel injection and a lightweight aluminium chassis. It offers an alternative to mainstream Japanese and Austrian 450cc motocross machines, retaining the specialist engineering and relatively low-volume production associated with TM motorcycles.
The 2027 model continues the established MX 450 ES Fi platform rather than introducing a confirmed complete redesign. TM Moto Japan lists the motorcycle in its official 2027 range, although the currently published technical specifications carry forward information from 2026. The engine retains its 95 mm bore, 63.4 mm stroke, eMoticom electronic management and five-speed gearbox. Electric starting is standard, while a kick-start mechanism is available as an option.
An interesting feature of the MX450ES-4T is its chassis layout. TM has developed the motorcycle around an aluminium Deltabox-style frame, with the fuel tank positioned towards the rear and the airbox located towards the front. This arrangement reflects the manufacturer's approach to centralising mass and managing weight distribution. The fuel-injected engine uses a TM Moto throttle body, eliminating conventional carburettor jetting adjustments while making electrical connections and fuel-system maintenance important considerations. Owners looking for replacement components can consult the MXOwners motorcycle parts finder.
Suspension equipment includes 48 mm KYB Air-Oil Separate closed-cartridge forks and a linkage-operated TM Moto rear shock. Published suspension travel is 310 mm at the front and 300 mm at the rear. Both ends provide damping adjustment, allowing riders to adapt the motorcycle to different track conditions and riding styles. Correct rider sag and spring preload remain essential for balanced handling. The MXOwners rear suspension setup and adjustment guide provides additional information about these adjustments.
Routine maintenance remains an important part of owning a competition four-stroke. Regular engine oil and filter changes, air-filter cleaning, valve-clearance inspections and cooling-system checks help maintain reliability under demanding motocross conditions. The gearbox shares the engine lubrication system, making the correct wet-clutch-compatible oil particularly important. With its Italian-built engine, distinctive chassis arrangement and established racing heritage, the 2027 MX450ES-4T continues to offer an individual alternative in the competitive 450cc motocross category.
