The 17-Year-Old Christchurch Boys' High School student ended New Zealand's campaign on a high note, claiming his second rainbow jersey.
Alongside Taupo team mate Kiaan Watts, Pithie rode to success in the two-person Madison discipline, winning by a comprehensive 14 points over silver medalists Germany.
On Saturday, Pithie claimed gold in the individual Omnium event, beating his an Australian rider by a convincing 21 points.
"I didn't think I'd be able to do the double," said Pithie, labeling the week-long competition as his "best to date".
Pithie trained full-time for a month prior to the world championships, taking time off school to spend hours at the High Performance Sport New Zealand velodrome in Cambridge.
"It was like I was a professional athlete for a bit."
The New Zealand team also celebrated the success of Waikato cyclist Ally Wollaston, who claimed gold in the individual pursuit.
Pithie will return home to finish off his Year 12 studies, before looking to find a team and pursue a road cycling career in Europe next year.
