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Small Engine & Generator Quiet Mufflers: Quiet mufflers reduce the exhaust noise of large and small engines. We have SuperTrapp quiet mufflers that can retrofit almost any engine, as well as Briggs & Stratton and Tecumseh quiet mufflers. Whether you need to tone down your lawn mower or generator, a quiet muffler will make your equipment more enjoyable to be around for you and your neighbors. Learn How to Install a Quiet Muffler.