King, who can play at lock or in the back row, enjoyed a breakthrough campaign last term and has continued his impressive performances this season, making outstanding contributions to recent wins over Toulouse and the Scarlets.
The 22-year-old said: "I've been here since 2008 and it's gone well for me. This is my region and I'm very happy to stay here.
"Last season I was fortunate enough to get involved a lot more and get more game time. I got to play in the RaboDirect PRO12 final, which was really great.
"I'm still developing as a player though and this is the place for me to do that."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
