High-quality titanium valves are used on the intake side. The new camshaft actuates four valves via lightweight rocker arms. But it’s not only the powerplant that was redesigned the Austrian machine also gets a newly-designed chassis, rims and bodywork.Following are the new features on the 2012 KTM 500 EXC: 2012 KTM 500 EXC Engine Highlights:The 500 EXC’s new, improved silencer not only offers greater volume and a new design, it also reduces noise levels to the stricter standards of the future.All ports and the combustion chamber have been redesigned in the OHC cylinder head of the 500 EXC’s new engine. With engineering typical of KTM, the new 510.4cc SOHC EFI engine is 5.5 lbs.
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