2021 KTM 500EXC-F
Off-Road / Dirt Bike Motorcycle for sale by MotoMember in Purcellville, Virginia 20132
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Engine & Exhaust
Engine: Combining compact dimension with an immense power output, the KTM 500 EXC-Fs fuel-injected SOHC engine is the most powerful and refined 500 cc on the market. Its class-leading power delivery is available throughout the entire rev range and with its low weight of only 29.2 kg, this engine is the most compact, lightest and most competitive powerplant out there. With Euro IV homologation, its not only considerately green, but leaves the competition green with envy too.
Cylinder Head: The KTM 500 EXC-F engine is fitted with a compact SOHC cylinder head for optimal mass centralization while contributing to even better handling. The head configuration promises efficient power delivery and unrivalled performance as the gas flow through the ports is controlled by a single overhead camshaft. It features a durable axial fixation of the de-compressor shaft and an efficient, integrated engine breather system. The rocker arms and low-friction timing chain guides guarantee a consistent performance throughout the rpm range.
Crankshaft: The KTM 500 EXC-Fs crankshaft is located in an ideal position close to the center of gravity, contributing to easier handling. It utilizes a short connecting rod, which makes for an overall compact and lightweight engine with a snappy power delivery. A plain big (bottom) end bearing with two force-fitted bearing shells runs directly on the crank pin. The engines pressurized lubrication system provides the necessary oil feed for this bearing. This design has a direct benefit for the crankshaft with extended service intervals, which are lengthened due to the plain bearing. So just pin it, all day long.
Engine Cases And Covers: The EXC models feature reworked engine cases, reducing the weight by nearly 300 gr. The design allows for a very centralized shaft configuration, making the engine very short and compact, while contributing to an efficient centralization of mass. Additionally, the engine covers feature a smart surface structure which reduces wear caused by the riders boots, keeping them looking as fresh as the day you bought it, while a new reinforced clutch cover means the engine is more robust, even in rocky terrain.
Transmission: The KTM 500 EXC-F uses a new 6-speed transmission made by PANKL RACING SYSTEMS, that now features a stronger, forged raw material, ensuring the highest durability and reliability. There was no need to change the gear ratios that are perfectly matched to the power characteristics of the engine. All four-stroke engines are fitted with a gear sensor, giving the option of different engine characteristics for each gear.
Engine Management System: The state-of-the-art Keihin Engine Management System, with electronic fuel injection, features a new 42 mm throttle body. There are separate systems for cold starting and idle adjustment, while an improved seal of the MAP sensor (MAP = Manifold-Absolute-Pressure) makes the system even more reliable. A reworked throttle cable mount allows for easy access and smoother routing of the cables. Additionally, for 2020, the ECU features a new map which has been adapted to the new exhaust, airbox and engine configuration, ensuring maximum power as you shift through the gears
SubcategoryOff-Road / Dirt Bike
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