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S&S Cycle camshafts are high quality replacement parts that have been engineered with the same features and dimensions as the original motorcycle camshaft. Camshafts have lobes and when they rotate, the lobes push against the valves to force them to open. The opening and closing of the valves is a critical step as it is one of the processes needed to improve the performance of the engine. To ensure they are always reliable and perform as expected, S&S Cycle has made these camshafts with quality materials that have been strengthened to withstand pressure. Strong camshafts tend to survive in any operating environment without any damages.