S & J Motors LLC, 705 Highway 10 W, Orange City, IA 51041, US

Established in 1956, Silent Drive Inc. specializes in the manufacture and wholesale of portable lift equipment and suspensions for the trucking industry. Based in Orange City, Iowa, the company offers a wide range of products, including steerables, nonsteerables, trailer lift suspensions, primary trailers as well as air controls, to name a few. The Tactical Observation Platform designed by Silent Drive Inc. offers many standard features and a number of optional features to assist in reducing crime, collecting evidence and controlling crowds. The company also produces hydraulic and air axle lifts. Silent Drive Inc. was the first to use the automatic leaf spring lift incorporated into the suspension.

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