SINGAPORE - * Kuwait Petroleum Corp (KPC) has cut the official selling prices (OSPs) for two key crude grades it sells to Asia in September, a source with direct knowledge of the matter said on Tuesday

* The producer has set Kuwait Export Crude (KEC) price for September at $1.00 a barrel above the average of Oman/Dubai quotes, down 40 cents from the previous month, the source said

* It also cut the September Kuwait Super Light Crude (KSLC) OSP for Asia to $1.60 a barrel above Oman/Dubai quotes, down 90 cents from the previous month, the source said

* Kuwait's price reductions followed top oil exporter Saudi Arabia, which cut its September OSPs for Asia earlier this month

(Reporting By Shu Zhang; Editing by Rashmi Aich) ((shu.zhang@thomsonreuters.com; +65-6870-3549; Reuters Messaging: shu.zhang.thomsonreuters.com@reuters.net; Twitter @shuzhang4))