Citing poor market conditions HKS USA, formerly one of the largest aftermarket JDM performance companies in the country, is ceasing U.S. operations after nearly three decades in business. A letter obtained by Jalopnik shows the company will consolidate its work to Japan.

A letter from HKS to its dealers and vendors went out this afternoon, much to the surprise of companies who have been using HKS parts for decades. The letter blames the move on the slow economic recovery, a shrinking aftermarket, the U.S. Dollar, and the disaster in Japan.

The company will continue to sell parts to the United States, but all operations will be transferred to HKS Co. Ltd. in Japan while HKS USA is folded. Click on the thumbnail to view the full letter.