Established in 1985, Sona Koyo Steering Systems Ltd. is the group's flagship company, and the largest manufacturer of steering systems in India, catering to passenger cars, utility vehicles and light commercial vehicles. Sona Koyo has technical and financial collaboration with JTEKT Corporation, Japan (formally known as Koyo Seiko Co. Ltd.), the largest producer of passenger vehicles' steering systems in the world.
Sona Koyo's customers include major vehicle manufactures in India such as Maruti Suzuki, Toyota, Hyundai, Tata Motors, Mahindra & Mahindra, General Motors and Mahindra-Renault. Independently, as well as through its network of overseas joint-venture partners, it exports high quality precision products to USA, Europe and Japan.