Jost International this month shipped the 400,000th fifth wheel manufactured at the company’s Greeneville, Tennessee, facility. The cab-actuated air release fifth wheel was installed on a Class 8 truck for Werner Enterprises.

Production of Jost fifth wheels began in the U.S. in 2000 at the site of the current 90,000-square-foot Greeneville facility. Since that time, Jost’s domestic market share for fifth wheels has grown significantly, with a corresponding increase in production and employment. In November the company broke ground for a 12,000-square-foot addition to add loading docks and increase inventory space to accommodate the expanding industry requirements and expected future growth.

Jost fifth wheels feature safe and simple locking mechanisms with only four moving parts.  They are infinitely adjustable and the company says the ease of maintenance results in the lowest total cost of ownership in the fifth wheel segment.

Rich Carroll, vice president sales and marketing, predicts the company will continue to gain increased penetration in the domestic market, as its OEM positions have dramatically improved in recent years.