Air support international offers better-than-original parts at much better prices. Air Support International (ASI) offers proven quality piston aircraft engine parts, proven in testing and in millions of hours in the air. Every part is measured to specifications and engineered for reliability and durability. With over a decade of experience in aircraft part manufacturing, ASI has a reputation for outstanding quality that makes us a leader in the aviation industry. ASI has grown from holding the world's largest FAA-PIIA camshaft inventories to offering a full line of engine overhaul parts for Lycoming* and TCM* engmes. Now, ASI is the largest FAA-PMA camshaft manufacturer in the world and offers quality parts guaranteed to TBO at lower prices. Key reasons for ASI being the worlds largest FAA_PMA camshaft manufacturer Features of the ASI camshaft: ASI camshafts are made from aircraft steel forging for ultimate strength, reliability, and heat-treat response. The forging process assures the elimination of gas pockets or void that could cause camshaft failure or premature wear. ASI camshafts are more uniform in chemistry than others, have larger stronger radii, and are finer in gain size with better gain flow. ASI camshafts have a precision timed cam profile for optimum performance and durability. ASI camshafts are carburized and hardened to precision uniform depth obtainable only through a well-proven process with literally millions of engine hours behind it. ASI parts are 100% American made and we are very proud of the durability and track record of our aircraft parts.