Young couldn't quite find the knockout blow against Arnett despite rocking him a few times through their three rounds.
Arnett was the longer of the two fighters and used his range well to keep Young at bay early. It forced Young to work as a counter fighter in the first round, before he began to exploit gaps in Arnett's defence and land some heavy blows. Young rocked Arnett late in the second and third rounds, and claimed a 30-27 win on the scorecards.
"After it finished I was like 'damn I want three more rounds'. It's so fun," Young said. "I wish I didn't like scraps like that, because it's not good for your health long term, but f*** it's fun."
Young made it two for two for the City Kickboxing stable, after Kai Kara-France toppled Brazilian debutant Raulian Paiva.
On a 12-fight win streak, Paiva gave Kara-France a good challenge. However, a big third round from the Kiwi saw him take out the win.
Speaking after his bout, Kara-France said you could feel it inside the cage when the crowd sprung into action.
"It was a tough fight for me, but it's a good win to get on my record now and I'm looking forward to the future" Kara-France said.