Hero had acquired 49.2 per cent stake in EBR in 2013 for $25 million (about Rs 148 crore) and had plans to market its products in the US through the EBR network.
Hero MotoCorp said in a statement that Erik Buell Racing and its subsidiary Erik Buell Racing LLC have filed an Assignment for Benefit of Creditors under Chapter 128 of the Wisconsin Statutes, which is similar to the federal bankruptcy law of the US, and have ceased their operations.
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Hero had made the acquisition as part of its strategy to enhance technological prowess, post the break-up of its joint venture with Honda.
The company had earlier entered into a technology sourcing pact with EBR in 2012 to strengthen presence in the high-end bike segment. The move was part of the Pawan Munjal-led company's overall strategy to have multiple technology sources for different segments and enhance its own R&D capability.
Hero MotoCorp, however, maintained that the closure of EBR would not impact its R&D and future product line up.
"Hero MotoCorp, with strong in-house R&D capabilities, remains confident that its future product line-up would not be affected despite EBR ceasing operations," the company said.
The company's Centre for Global Innovation, Research & Design, coming up at Kukas on the outskirts of Jaipur in Rajasthan, is expected to commence operations in financial year 2015-16. It will have around 600 engineers from India and around the world, it added.
The company's shares were trading at Rs 2,495.00 apiece on the BSE, down 1.14 per cent from previous close.