About us

We Have Placed Quality and Technology
at the Core of Production.

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Hammer kupplungen

We Lead the Way in Next-Generation Automotive Technology

Founded in İzmir in 1980, Dönmez Clutch is today Turkey’s largest clutch manufacturer, producing for heavy and light commercial vehicles with 100% domestic capital. Over time, it has secured a strong position in the global market and become an international brand.

With more than 40 years of experience and a solid corporate structure, the company manufactures under the brands Dönmez and Hammer Kupplungen, exporting to over 80 countries with production ranging from 215 mm to 430 mm, including pressure plates, discs, bearings, flywheels, and turbo components.

Focusing on innovative technologies and sustainable production, Hammer Kupplungen offers project-based customized solutions through digitalized production lines and eco-friendly processes. With the completion of its new factory investment in 2020, the annual production capacity has reached 600,000 units.

The growing global interest continues to carry us toward greater goals and higher performance.

Our Mission

With our qualified human resources and business partners, we design, manufacture, and deliver innovative and technological products that meet customer expectations to global markets.

Our Vision

With the goal of sustainable success, we aim to be a reliable and pioneering manufacturer that elevates our brand to the top on a global scale.