Sacchitt beat Shashank 6-2 6-4 in the boys final while Mahak outplayed Prinkle 6-1 6-1 in the girls final of the Masters event in which 16 boys and 16 girls competed.
The Masters event for the Under-14 players was held following conclusion of preliminary qualifiers in Kolkata, Chandigarh, Delhi and Mumbai.
The four Indian players will now compete in UK's championship in August 2015 at the All England Club.
Siddhant and Adil Kalyanpur had also claimed the doubles title while Indian girls Aarja Chakraborty and Shivani Ingle had ended runners-up in the girls' doubles.
The agreement between the All India Tennis Association (AITA) and the Wimbledon Foundation for the 'Road to Wimbledon' programme has been extended till 2017.