Police arrested 31 people, of whom 13 were identified as key figures in the group, police said in a statement following today's sentencings.
Matthews was the last person to be sentenced.
Most of the 13 people who were arrested received terms of imprisonment ranging from two years to just under 12 years.
During the police operation, 36 vehicles were seized, including BMWs, Mercedes, a Hummer, and Harley Davidson motorcycles, as well as approximately $400,000 in cash, firearms, cannabis, and 450 grams of methamphetamine with a street value of around $450,000.
A clandestine lab was found in Murupara.
"This operation has made a significant dent in the distribution of methamphetamine in the central district," Detective Inspector Chris Bensemann said.
Police said they also found evidence that gangs were working together, and an increased presence of the Rebels gang in New Zealand.