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 with lots of control for XC1 racing.
Features May Include:ENGINE
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 . Thanks to a revised crankcase, the weight is reduced for 2014.DDS CLUTCH
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. Strengthened for 2014, the diaphragm spring also leaves sufficient space for a damping system integrated into the clutch hub, which benefits both traction and durability. A stronger inner hub further increases stability. The hydraulic Brembo clutch mechanism with a new master cylinder guarantees a light operation and highly controllable modulation of the clutch.BALANCER SHAFT
In order to balance the mass-forces, the 450 engine uses a multifunctional counter balance shaft which also drives the water pump and timing chain. The engine receives a new water pump cover with a new gasket in order to optimize the seal.CYLINDER HEAD
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. In 2014, a new three-layer head gasket is used that guarantees more durability under the most extreme conditions. In addition, the camshaft has received a strengthened auto-decompression mechanism.AIR BOX
The airbox design offers maximum protection of the air filter against dirt while ensuring maximum airflow for top performance. The Twin Air filter can be changed without tools in seconds, a standard for KTM.SWINGARM
The cast aluminium swingarm has been developed with state-of-the-art calculation and simulation software and constructed, in terms of design and wall thickness, for minimum weight with optimum stiffness and precisely defined flexibility. For the 2014 model year, our engineers have revised the chainguide for the benefit of higher functional reliability, while simultaneously reducing the weight.SUSPENSION/DAMPING
For 2014, all XC models are fitted with a newly developed 48mm 4CS Closed Cartridge fork featuring the patented 4-Chamber-System. The sophisticated design provides very constant and sensitive damping characteristics and an adjustable end progression. The new hand click adjuster system is now accessible on top of the fork, rebound on the right hand side, compression on the left. The fork is fitted with improved seal rings made by SKF and high performance fork oil (SAE 4). Compared to the predecessor, the new 4CS fork is lighter, easier to maintain and has been completely valved to match the shock for XC racing.