Manufactures, Repairs and Distributes Automotive & Agricultural Drivelines, Universal Joints, Fan Clutches, 4 by 4 Drivelines. SLY Drivelines manufactures, repairs and distributes drivelines and related products including U- joints throughout the Western United States. In addition to operating in Nevada, we provide high value products and services in Utah, Idaho, California, Arizona, Montana, Wyoming, Washington and even Alaska.