Indian shuttlers achieved their best ever performance at the Asian Youth (U-15 and U-17) Badminton Championship by winning two gold medals here on Sunday. Siril Varma, 14, defeated local Putra Gatja 21-11, 21-17 in the boys U-15 singles final. In the U-17 doubles combination, top seeds M.R. Arjun and Chirag Shetty best Thais Mak Narongrit and Kantaphon Wangcharoen.