He made his All Blacks debut against Japan in 2013 and was also part of the 2011 New Zealand Under 20's IRB Junior World Championship winning team alongside Brodie Retallick and Sam Cane.
The Waipukurau-born 24-year-old said the move will help further his rugby career.
"I have enjoyed my time at the Crusaders and it is a big part of who I am, but it is time for a new chapter to further my career.