It's not, it is just the front box kit. Then you need the rear block, or in my case I went with the DEAVER mini pack they were 400, and to utilize 4x4 effectively, you also need a front driveline for 550. And the NTBD(no torsion bar drop) is another $$$ option, like 350, add these to the advertised price of the front box kit, then you have a complete lift
The good side of cognito... Everything is super stout, nothing is cast it's all welded plate steel, the front lift kit only uses a 1/4" spacer to extend out the c/v axle so you don't loose hardly any of your turning radius(i can hardly notice it) and the ride and tire wear is really good, you get the pitman and idler arm brace parts and the HD sway bar end links standard, and I would upgrade the idler pivot assembly while you're at it as well. You can find better tie rods than what cognito offers, IMO.
FYI- With any 4" kit you will have to trim pretty good to fit 35x12.5 tires. And the more the kit pushes the front tires out, the more you will be trimming. Iirc, the rancho kit moves each side out over an inch! So look into that before you pull the trigger, there is alot more to consider than just price.
One thing to note as well, kits that retain the stock location for the front diff and front driveshaft may be better for 1/4 mile duty, that is the only thing I have not liked about the cognito 4" kit, it dropped the front diff down, which is why you need a new front driveline with compounded u-joints to accommodate for the added angle, and now I have a high speed vibration I am convinced is related to the driveline configuration.
Here's my truck with the cognito 4" 18x10 wheels with 4.5 bs and a -12 os with 285/75/18(35x11.5) and I had to trim a bit to fit them, but my c/v angles are flat, the kit is set at 4"
