The lightweight valves are actuated via a rocker arm and feature timing specifically designed to deliver precise levels of torque and throttle response. A new, more durable fine punched cam chain runs on low-friction chain guides for optimal efficiency and improved reliability with a single oil spray jet guaranteeing effective cooling. CYLINDER HEAD: The redesigned SOHC cylinder head is incredibly compact with the camshaft positioned as close to the center of gravity as possible for significantly improved handling and agility.Servicing of the engine is made easier compared to previous models thanks to the addition of service markers on the engine cases. Low in weight and weighing just 59 lbs (26.8 kg), the engine is designed to centralize mass for enhanced handling and significantly improved anti-squat behavior from the chassis. ENGINE: The FX 450 engine benefits from advanced engineering techniques to deliver maximum performance. This was achieved by a new, narrower mounting design in the frame layout, which also helps reduce overall weight.
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