Etymologizing word NikpiKhel as:
Nikpi (نیکفی) is Pashto for "fortunate" and khel (خیل) is Pashto for "tribe" or "clan".
NikpiKhel (also Nekpikhel Pashto: نیکفی خیل') is the area surrounding Kabal, lying just opposite to Mingora on the Western bank of River Swat, Swat, Khyber Pakhtunkhwa, Pakistan. About NikpiKhel:
The Nikpikhel are divided into two clans, Aba Khel and Asha Khel. As of now, there is no definite information on Asha Khel but possibly they reside in areas like Kanju, Damghar, Dherai, Kuza Bandai, Bara
Bandai, Ningolai and beyond. However, one of the well known tribe is Audal Khel, residing in Kuza Bandai and Bara Bandai and dherai. Other known tribes are Nasir Khel, Ali Khan Khel, Ghali Khel, Aibo Khel, Babukar Khel,molaan,shado khel,bucha khel. the well known tribes of kanju are khatak khel and niamat khel.both are so called malaks of bar and kuz kanju. the main tribe and well known tribe of mamdherai and damghar is babukar khel.they live near the bank of river swat.they arecalled the malaks. audal khel resides in bara bandai ,kuza bandai and dherai they are so called 'khans of the area'.they ruled the area. info taken from(http://en.wikipedia.org/wiki/Nikpikhel).
'Aba Khel' is divided into 'Bar' ("upper") Aba Khel and 'Kuz' ("lower") Aba Khel. 'Kuz Aba Khel' includes Dedahara, Gadi, Dagay, Kotlai, Akhun Kilay, Kabal, Sirsinai, Hazara, Aligrama and Malooch. 'Bar Aba Khel' includes Kalakilay, Totano Bandai, Manja, Golden, Devlai, Nasrat, Shahdeari, Samai, Maira, Taal, Dardyal, and Kamyalri. Bar Aba Khel is divided into three clans/tribes, Mata Khel, Zaina Khel, and Sahib Khel. The Mata Khel is futher divided into three sub-clans/tribe (subkhel) that includes Saran Khel, Khushal Khel and Jura Khel. Saran Khel reside in Shahdeari, Totano Bandai (Totanobandai), Golden, Manja and Dardyal. There is no definite information on Zaina Khel. Sahib Khel is futher divided into many subkhel like Baro Khel based in Devlai, Golden, Nasrat, Shalhand, Tagma, Malakana.