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JOST Werke SE
JOST Werke makes safety-critical parts and systems for commercial vehicles, like trucks and trailers, and sells them to vehicle makers worldwide.
JOST Werke makes the parts that hold a big truck or trailer together and keep it safely on the road. Its main products are the fifth-wheel couplings that lock a trailer onto a tractor unit, the landing legs that hold a trailer steady when it is unhitched, and the axles and suspension systems underneath. If any of these fail, a heavy vehicle can break loose or tip over, so truck makers buy from suppliers they trust completely.
The company is headquartered in Neu-Isenberg, Germany, and it earns its money by selling these components to vehicle manufacturers and fleets around the world. Truck builders choose JOST because its parts are engineered for safety and reliability, and because the company has built a reputation over decades for being a dependable supplier. Once a manufacturer designs a JOST coupling into a truck model, switching to a rival supplier is expensive and risky, which gives JOST steady, recurring business.
JOST grows through a mix of steady demand for new trucks and the aftermarket, where replacement parts bring in steady sales as fleets wear out their equipment. It also expands by acquiring other companies in the commercial vehicle parts space, adding products and reaching new regions. The trucking industry moves with the economy, so when freight volumes fall and truck makers slow production, JOST feels the pinch, but its aftermarket and replacement business helps smooth out the worst of those swings.
Saved answer · last researched 14 Nov 2026