TM Racing Hard Enduro 4 Stroke - 2025 EN 250 FUEL INJECTED CORSE HARD ENDURO MODEL is the queen of TM Italy's 4-stroke bikes, in the medium engine size with electronic fuel injection.

TM Moto Street Legal 250 4 stroke enduro dirt bike is the choice for weekend warriors & hard enduro riders. 

It faithfully reproduces the performance and feeling of riding the official bikes that race in the Enduro World Championship. It is equipped with very linear, controllable power delivery: the rider is always in full control.

For years, it has achieved outstanding results in the world championships. Particularly worth mentioning is its recent victory in its class at the 2021 world championship.

TM 250cc 4 Stroke Fuel Injected Engines:

Hand finished crankcases. Lightweight and strong die-cast clutch casing, clutch inspection, water pump and ignition covers. Aluminium water pump rotor. Billet machined crankshafts. Billet connecting rods. Box-bridged pistons with DLC coated gudgeon pins. Hand finished cylinder heads. Titanium valves matched to copper beryllium valve seats. Chain driven overhead twin camshafts actuating ‘finger followers’. Twin rotor oil pump (dry sump type arrangement).

High performance – long lasting clutches. ‘Cush-drive’ clutch baskets. Friction reduction hard coated clutch baskets. Friction reduction hard coated gearbox selector fork tips. Hardened / Treated gear-shaft parts. Hydraulic clutch actuation. Emoticon controlled Fuel Injection systems. Kokusan digital variable advance ignition with twin map selection working with the Fi systems. Gear position sensitive variable ignition timing. HGS ‘bomb’ type Exhaust systems. Electric start.

The TM Racing range of 4-stroke engines has become legendary for exceptional power delivery and outright performance and durability. The ability of these engines to perform has become renowned worldwide and for a ‘production’ engine the internal components and materials used are unmatched, many of these components and materials being of a level of quality that would only usually adorn the best of the ‘factory’ engine machinery. With an ever-growing list of results globally in many disciplines, the 4-stroke range of TM

Racing engines has grown to not only accommodate the off-road sector, but also now feature in road racing and even Karting. The TM Moto engines have been dominating in the Enduro world for several years, taking multiple world titles, European and domestic titles around the globe. These latest TM Racing 4-stroke machines have been turning heads and impressing riders globally with their sheer performance and handling, a superbly engineered racing machine that are outperforming their predecessor in all aspects and achieving great results.

The 4-stroke range will retain the current ‘reverse’ chassis configuration with fuel tank under the seat and the air intake above the engine. This layout has seen a huge transformation in the handling characteristics of all the 4-stroke models since it was introduced and has been gradually improved upon year on year. Centralised mass, better outright balance and revisions to the geometry and suspension settings have allowed TM Racing to create and incredible range of 4-stroke machinery all with superb ability and agility.

An incredible range of engines matched to an incredible range of chassis, each tailored to a ‘base’ engine, have given TM Racing the ultimate range in 4-stroke machinery, with each model proving itself to be class leading on the world stage in it’s given discipline. We have some small but significant changes to the engines for the new model year, all model variant engines differ internally on a large scale also, differences to the camshaft, piston, valves, crankshaft, con-rod, gearboxes and more, not to mention settings in the electronics and fuelling systems to tailor the performance of each engine perfectly. Each of these changes is tailored to every model and designed to work alongside the revised throttle bodies and Fi systems, maximising the responsiveness and outright engine performance of these already incredible engines for each given discipline.

All TM Moto 4-strokes models will receive some technical changes for the new model year, all designed to work harmoniously to give greater performance throughout. The best just got better.

‘FRESH AIR SYSTEM’: All TM Racing adult 4-Stroke models feature the ‘Fresh Air’ intake system which allows the engine air filtration system to breathe cleaner air, this system reduces particulate contamination of the air filter maximising power for longer duration. Air is channeled from the intake vents –  via the radiator panels and fuel tank –  to the airbox which houses a large volume air filter. The ‘Fresh-Air’ system also brings another added advantage in the form of a lower centre of gravity, with the fuel tank now positioned slightly further into the chassis around the engines cylinder, this ‘weight’ shift, combined with the latest frame geometry and suspension, all work harmoniously to maximise the handling characteristics of each machine. TM Racing have created a line of incredibly nimble and agile machines, better handling characteristics, turning, stability and weight losses were seen throughout the current chassis guise as well as gains in engine performance.

WHEELS: The CNC machined billet aluminium hubs, laced to anodized Excel rims, feature the latest spoke arrangement with a ‘tapering’ design profile in a stronger material, a material treated to increase corrosion resistance, larger spoke nipples feature on the front wheel also for added strength. The wheel configuration allows for the best in strength and durability of the wheel components whilst reducing the un-sprung weight by a small margin. The CNC machined hubs, featuring external dust seals encircling CNC machined wheels spacers to further protect the wheel bearings, are mounted to the suspension components via large diameter hollow spindles. The larger diameter spindles, machined through their centres to lower weight, allow for a more rigid fixing off the wheel reducing the flex and allowing the suspension to work more effectively.

BRAKING SYSTEMS: The braking systems for the TM racing model range has also received some new components in the form of some new options for the SMK range and new Brembo front brake pumps for some adult models. The entire model range continues to feature high quality oversize wave discs working with TM Racing’s ‘mix’ of components. The master cylinders are connected to the brake calipers with lined and braided high quality racing brake lines that are designed to minimise expansion and ensure maximum braking effort is always transmitted to the calipers. This tried and tested collaboration of parts is regarded as one of the best braking systems in many tests and by racers alike. These braking systems keeps performing in the harshest conditions giving great efficiency and inspiring confidence always. The rear brake system is actuated by a twin bearing pivot-mounted, billet machined aluminium foot lever with a replaceable tip.

TRIPLE CLAMPS: The triple clamps fitted to TM Racing motorcycles competition range are CNC machined from block aluminium and each clamp is a work of art. The clamps intricate machining, most of which can only be seen from the underside, gives a structure designed to be supremely strong whilst keeping weight to minimum. The triple clamps also come with an optional ‘damped’ bar mounting system that through a tapering rubber cone arrangement, allow vibrations that can be transmitted through to the handlebar area to be reduced, whilst also allowing some ‘give’ to the bars in the event of a fall reducing the chances of more severe damage occurring to the handlebars and the components adorning them. The handlebars are secured, via the optional ‘damped’ bar mounting system, by billet machined bar clamps, with the top bar clamps featuring a machined TM Racing logo on their upper face.

CLUTCH ACTUATION: All TM Racing machines come fitted with a Hydraulic actuated clutch as standard, the master cylinder, made by Brembo, transmits fluid via a lined and braided hydraulic line to TM Racing’s own ‘slave’ cylinders. With separate slave cylinders every engine, each unit designed to fit and perform for each model giving a balanced clutch feel between all engine size variants, with both single and dual seal pistons in the slave cylinders depending on model application. The Brembo master cylinders, working with the braided hose that limits hose expansion under extreme load, gives great feel and precise clutch control with great durability when combined with TM Racing’s ‘cush-drive’ (hard coated) clutch baskets, which on all variants 250cc and over, are coated with a hard wearing, friction reduction coating. All clutches are multiple disc ‘wet’ units with multi sprung pressure plates.

ELECTRIC STARTING: The ES abbreviation in any motorcycles descriptive from the TM racing range denotes that the machine has ‘Electric Start’. The TM Racing Electric start system is powered by a new, lightweight, Lithium-Ion battery that is recharged during engine running by the electrical system. Electric start is now standard fitment on all models and engine capacities over 144cc.

ENDURO / ROAD EQUIPMENT: All Enduro and ‘Road’ designated variants of the TM racing model range come with a full, self-generating ‘LED’ illuminated lighting system (which can operate also from the battery system on Electric Start models) powered by the crankshaft mounted electrical generator. This system includes a complete ‘side’, ‘dipped’ and ‘main’ beam headlight assembly – AHO specific, a rear taillight and rear brake light – operated by both front and rear brake actuation cylinders – with rear number plate illumination, a turn signal ‘Indicator’ system and of course, a horn. All these functions are controlled via a handlebar mounted multi-switch that also includes an ‘engine stop’ button. Working alongside the lighting part of the system is an illuminated digital speedometer with ‘trip’ functionality, this speedometer unit registers the vehicles given speed via a sensor located on the rear wheel of the motorcycle.

All the 2025 models are the result of a design overhaul in all areas: from the smallest parts to the most sophisticated electronics.

TM Corse model technical details:

• New front brake disc with modified braking track for more precise and aggressive braking
• New full rear brake disc that allows more modulable braking in critical situations and reduces brake pad wear
• Shock absorber linkage fork with 1mm increased wheelbase that slightly reduces the height of the bike and improves traction and stability of the bike
• Made in Pesaro CNC aluminium fork triple clamp anodised bronze 
• Front brake pump and clutch reservoir caps in CNC aluminium bronze 
• Wheels axle with quick release pullers for greater ease in disassembling and reassembling
• Rear caliper block support to keep the rear brake caliper in position during disassembly and reassembly of the wheel
• Chain guide in high density plastic material for greater resistance to wear and offers greater stability and shock absorption
• New Bi-Material sprocket by CHT with aluminium body and steel chain track to combine lightness and durability
• Radiator fan that allows to contain the engine temperature in favour of a better performance even in critical conditions
• Revised and improved frame structure
• CNC aluminium engine side covers for greater impact resistance, bronze anodised for an aggressive and Racing look
• Racing version license plate holder with reduced inclination
• Hand guards included for all models
• New single exhaust for 4T models that allows for a reduction in the overall weight of the bike, a more linear delivery when opening the throttle and at medium revs
• New colour plastics with “Full Grey Quantum” look that distinguishes the new TM Moto range, plus new dedicated graphics with new TM Corse logo

For TM sales & enquiries, call the APW Motorcycles team on (02) 4333 4797 or admin@apwmotorcycles.com.au we're happy to help.