2015 KTM 450 XC-F
Charlie Mullins often leads the GNCC pack aboard the potent XC-F. No wonder, as the compact SOHC engine with the groundbreaking injection technology guarantees brute but highly controllable power. Among the large 4-strokes, the 450 XC-F scores mainly with its performance and agility. It is the right choice for every cross-country rider looking for torque and power.
Features may include:
The compact 60hp power pack with a single overhead camshaft and the latest electronic fuel injection is distinguished by unrivaled performance and a highly efficient power delivery . - NEW O-rings on the oil pump suction screen for increased durability.
Inside the cylinder with a bore of 95mm, an extremely lightweight bridged-box-type piston contributes to the engine s engine-speed strength. The compression ratio is 12.6:1.
Inside the 450 XC-F engine s cylinder head, an overhead camshaft controls four ultra-lightweight titanium valves via extremely rigid rocker arms which are DLC-coated on the intake side. This configuration allows engine speeds up to 11,500rpm, a major contribution to the unique performance of the large displacement KTM engine.
The 450 XC-F s crankshaft employs a plain big end bearing. Two force-fitted bearing shells run directly on the crank pin. The necessary oil feed for this bearing is ensured by the engine s pressure lubrication. This design is a major prerequisite for reaching the high engine speed levels and the impressive maximum power of the 450 XC-F engine.
The 450 employs the KTM-developed DDS clutch (damped diaphragm steel) with a wear-free steel basket and extremely heat resistant clutch plates. This design is distinguished by employing a diaphragm spring instead of the usual coil springs, which makes for a considerably easier clutch action.
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