Ngongotahā finished the game strong as Pikiao began to run out of puff, remaining in complete control to extend the lead and claim a 47-40 victory.
In the other Premier 1 matches, Whakarewarewa Red were in hot form as they beat defending champions Murupara 61-33 and Waikite Panthers beat Rotorua Girls' High School 43-37.
Rotorua Netball Senior Championship Results
Premier 1
Whaka Red 61 Murupara Stingers 33, Ngongotahā Thunder 47 Pikiao Warriors 40, Waikite Panthers 43 RGHS Prem 1 37.
Premier 2
Kahukura Red 68 Lakez 37, Eastside Gurls 1 53 Marist Trailblazers 37, Kahukura White DWn Ngongotahā On Call DLs.
Premier 3
Manawatahi Taiohi 46 Marist Storm 42, Reporoa Rangers 58 Ngongotahā Hapori 35, Manawatahi Black DWn Pikiao Raiders DLs.
Senior A
Waikite Flamez 53 The Chix 27, PK Stingers 42 Tuhoe 38, Kahukura Tri Colours 43 Kahukura Blue 35.
A Grade
Ngongotahā League 36 Ngongotahā Huia 17, Marist Strikers 51 Marist Astro 21, Eastside Gurls 2 49 Fordlands 29.
A Reserve
Ngongotahā Social 62 Waikite Social 35, Ngongotahā Mareikura 53 Marist Souls 9, Manawatahi Green 16 Marist Misfits 15.