KTM 300 EXC TPI 2020

Overview Engine & Exhaust Chassis Ergonomics & Comfort Bodywork & Graphics Software & Electronics

Engine & Exhaust

KTM sets the benchmark in technology with its vast range of race-winning offroad competition 2-stroke models. Two years after the introduction of the world's first 2-stroke electronically controlled fuel injection offroad models, the success story continues with completely reworked, new generation offroad competition engines, all fitted with the revolutionary TPI system. This now also includes the KTM 150 EXC which proudly adds TPI to its name and further demonstrates KTM's unrelenting commitment to 2-stroke advancement. The benefits are clear: besides huge improvements in fuel efficiency and exhaust emissions, the system also removes the need for pre-mixing fuel and re-jetting, meaning that with less effort, the engine always runs smoothly and crisply.

Engine

Cylinder

…The KTM 300 EXC TPI cylinder has a bore of 78 mm and is fitted with a sophisticated power valve, which provides really smooth and controllable power characteristics. For the EFI application the cylinder features two lateral domes which hold the fuel injectors that supply fuel to the rear transfer ports. The downstream injection guarantees excellent atomization of the fuel with the upstreaming air. Thus, the loss of unburnt fuel is minimal for less emissions, a more efficient combustion and reduced fuel consumption. A little tube in the back of the cylinder is connected with an intake pressure sensor, which supplies pressure data to the control unit. As of the 2020 model, the cylinders feature an improved power valve unit with a sophisticated mechanism for the lateral support exhaust ports. The new exhaust port layout increases engine performance, while the upper contour of the exhaust port has been machined to ensure more accurate port timing. Last but not least the new models allow the use of a more widely available type of traditional spark plug.

Crankcases and engine covers

…The compact engine cases are manufactured using a high pressure die-cast production process which helps with weight reduction, while retaining strength and durability. The design allows for optimal shaft arrangements close to the center of gravity, resulting in ideal mass centralization and easier ride-ability. Plus, the engine covers feature a smart surface structure which reduces wear caused by the rider's boots, keeping them looking as fresh as the day you bought your EXC.

Transmission

…The KTM 300 EXC TPI is now fitted with a new, more robust 6-speed transmission made by PANKL RACING SYSTEMS. The gear ratios were carried over from the predecessor, but is now made of a stronger, forged raw material, ensuring the highest durability and reliability level. Another highlight of the 300 EXC TPI transmission, is the no-dirt gear shifter. Similar to the footpeg design, it prevents the build-up of dirt and ensures the next gear is always available, no matter what the conditions.

Engine

Rekluse EXP 3.0 centrifugal force clutch kit

…The latest generation of the Rekluse automatic clutch featuring EXP technology. This automatic clutch is installed into the standard clutch, i.e. simple, uncomplicated and quick installation. The benefits: Easily adjusted from the outside via the clutch slave cylinder, so removal of the clutch cover or dismantling of the clutch is no longer necessary No stalling of the engine in critical situations such as braking into corners, on descents, mid-jump, when starting or pushing The improved traction can be controlled perfectly and smoothly via the throttle twist grip alone Slippery, extremely steep sections can therefore be conquered more easily (saving time and ensuring faster lap times) More relaxed, fatigue-free and controlled riding, even over longer distances in tough terrain Unrestricted and total concentration on the perfect line Use of clutch lever is not required, although it is still possible. Special hand brake lever kit available, allowing braking of the rear wheel with the left hand. Tested and approved by our experienced enduro factory riders.

POWERPART

HINSON-Inner clutch hub

…Improves clutch performance and life Improves heat dissipation Precision machined from billet T-6 aircraft quality aluminum to aerospace tolerances, and Akadized for five times the wear resistance to stock* (*with proper maintenance) Allows clutch assembly to spin more true creating less heat when clutch is disengaged Can be mounted to serial clutch or in combination with other HINSON clutch components

POWERPART

HINSON clutch pressure plate

POWERPART

Cooling

Always optimal

…Maintaining the optimal engine temperature is crucial to ensuring consistent horsepower throughout the ride. The KTM 300 EXC TPI features newly designed radiators which are mounted 12 mm lower than the predecessors. This lowers the center of gravity and matches the design of the new shrouds perfectly, in order to achieve perfect ergonomics. By using CFD technology (computational fluid dynamics) together with a clever coolant circuit routing, the innovative system ensures the optimum engine temperature for the highest performance, no matter what the conditions. Above all, a reworked delta distributor, integrated into the frame triangle, features a 4 mm larger center tube, increasing the cross section by 57%, making the coolant flow from the cylinder head to the radiators more efficient. The radiators also feature special protectors that don't only serve as protection from flying rocks and debris but also as a brace that disperses energy around the radiators in the event of an impact.

Cooling

Radiator protection

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POWERPART

Radiator fan

…Indispensable in extreme conditions, this fan ensures more air, better cooling and maximum performance. It's in your own hands: The digital control allows you to adjust the switch-on temperature to the present conditions and to read off the current temperature at any time. The switch-on temperature can be set anywhere between 65°C and 95°C. The switch-off temperature is set automatically, and is always 1°C below the switch-on temperature.For installation on all models, you will need the auxiliary wiring harness 77711979000; for additional switching, the Y-distributor 77711979044 can also be installed.

POWERPART

Reservoir

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POWERPART

Exhaust

Shaped for performance

…When it comes to improved power delivery and performance, the new exhaust plays a key role and packs a punch that is hard to beat. The 250 cc and 300 cc models feature new HD exhaust pipes (heavy-duty) made by using an innovative 3D stamping process which produces a ripped surface finish. This makes the pipe much stronger, with better resistance against rocks, while also helping to reduce noise drastically. The silencer features a new shape and end cap with reworked internal designs individually developed for each model. The plastic silencer holder is now replaced with lightweight, welded mounting brackets. In addition, the exhaust's new shape provides slimmer ergonomics and more ground clearance, while a new perforated inner silencer tube works with lighter damping wool for more efficient and more durable noise reduction. This adds up to a weight reduction of approximately 200 grams.

Exhaust

FMF Powercore 2.1 silencer

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POWERPART

FMF Titan Powercore 2.1 silencer

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POWERPART

FMF Factory Fatty expansion chamber

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POWERPART

CNC-parts

Factory control cover

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POWERPART

Outer clutch cover

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POWERPART

The illustrated vehicles may vary in selected details from the production models and some illustrations feature optional equipment available at additional cost. All information concerning the scope of supply, appearance, services, dimensions and weights is non-binding and specified with the proviso that mistakes, printing, setting and typing errors may occur; such information is subject to change without notice. No rights may be derived from incorrect statements.

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KTM 300 EXC TPI 2020

Engine & Exhaust

Engine

Cylinder

Crankcases and engine covers

Transmission

Engine

Rekluse EXP 3.0 centrifugal force clutch kit

HINSON-Inner clutch hub

HINSON clutch pressure plate

Cooling

Always optimal

Cooling

Radiator protection

Radiator fan

Reservoir

Exhaust

Shaped for performance

Exhaust

FMF Powercore 2.1 silencer

FMF Titan Powercore 2.1 silencer

FMF Factory Fatty expansion chamber

CNC-parts

Factory control cover

Outer clutch cover

The Company

Dealer & Service

News & Events

Legal

KTM 300 EXC TPI 2020

Engine & Exhaust

Engine

Cylinder

Crankcases and engine covers

Transmission

Engine

Rekluse EXP 3.0 centrifugal force clutch kit

HINSON-Inner clutch hub

HINSON clutch pressure plate

Cooling

Always optimal

Cooling

Radiator protection

Radiator fan

Reservoir

Exhaust

Shaped for performance

Exhaust

FMF Powercore 2.1 silencer

FMF Titan Powercore 2.1 silencer

FMF Factory Fatty expansion chamber

CNC-parts

Factory control cover

Outer clutch cover

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