S&S Cycle X-Wedge Engine - First Look
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The cylinder head's rocker box area houses roller rockers set parallel to the valves and attached to head studs instead of the rocker cover. A single beehive valve spring per valve allows for reduced spring pressure. Since the rocker cover is not structural, there is only one gasket surface to maintain, which has a wide clamping area for solid gasket sealing. View Related Article
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