4" lift from Super ATV will for 27's. Very easy to install. I also put high a clearance forward A arms (highly recommend) on mine and can fit 28's. If you do this you might as well replace all the bushings and ball joints in the suspension. I also added high performance front springs that give it another inch or two so I can run the front springs on the lowest level for the best ride without giving up clearance. One other thing, Depending on your wheels, some kits require spacers. I highly recommend not going a route that requires spacers. It looks good and rides better but I took mine off the first time it rained because it throws mud everywhere with the tires outside the fender wells.
The axles beginning in '12 or '13 didn't have the same issues as the earlier models.