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Re: X-HeadDOHC Cylinder Guards


I have recently purchased a brand new 2010 1200GS and I am considering purchasing your new X-Head DOHC cylinder head guard.  This may be an odd question, but since I am a newbie (to adventure riding anyways…), does the extensive coverage of the new X-Head interfere with the heat dissipation from the engine?  Thanks in advance.            Russ


Regarding your question about heat dissipation, while the X-Head covers the central area of the cam cover, the whole top is open and the shape has openings at the front and back of the part that is open to the air. That is not as important as the fact that these “oil head” engines are both air and oil cooled and are thermodynamically robust.  The highest temperature concentration is around the exhaust port where it can go to over 330 degrees F at idle, but the finned cylinder where combustion occurs is totally exposed to cooling air all around.  Temperatures at the cam cover, where the cylinder guard is mounted, can range around 180F to 225F. It encloses the cam/valve train which is cooled by oil that is constantly circulated by the oil cooler up front.  The addition of a guard over a relatively cooler extremity is benign in the bigger scheme of how the engine handles heat.