E-Cigarette Reviews and Rankings


Kizoku Unlimit RTA/Sub-Ohm Tank Review

After launching the Limit MTL RTA to moderate success a few months ago, newcomer Kizoku is ready to take on the much steeper competition in the sub-ohm atomizer sector with the Unlimit, an interesting device with a modular design that allows it to function in both RTA and sub-ohm tank modes. Without further ado, let’s check out the new Kizoku Unlimit RTA/Sub-Ohm Tank:

Kit Contents and Presentation

The Kizoku Unlimit comes in a rectangular cardboard box with a silver rendition of the atomizer on the front of the box, and some technical specifications, main features, and manufacturer contact information on the back. The kit contents are not listed anywhere on the box, which is a minor con, in my opinion.

Inside the packaging, we have the rather tall Unlimit in its RTA form, the user manual, and then at the very bottom of the box we have an impressive assortment of accessories: a pair of pre-made clapton coils, two strands of cotton wicking, a small screwdriver, replacement screws for the build-deck, a short bubble glass section, a small airflow reducer, a fill-port adapter to further increase the capacity of the atomizer, a small bag of spare o-rings, as well as coil-head for use in sub-ohm tank mode.

Design and Build Quality

The first thing I noticed about the Kizoku Unlimit when taking it out of the box was how tall it was, but the thing is this thing can get even taller with the included fill port adapter. It measures 57.5mm in RTA form, and 42mm in sub-ohm tank form, with the regular glass tube and now adapter installed.

Starting at the top, we have a Delrin 810 drip tip with the o-rings on the inside of tank port, a removable top cap that give you access to the classic top-fill port featuring two large kidney slots, a rather stubby glass tube and a short chimney on the inside. This is where things start to get interesting, as the Unlimit features an airflow control ring right under the e-liquid tank, then a base release ring underneath it, and another airflow control ring at the bottom.

I personally haven’t used this type of dual airflow system RTA before, but I’m pretty sure it’s been done before, I just can’t remember the exact device. Anyway, I thought it was a really intriguing design, as I know a lot of vapers who swear by side airflow, and others who claim that you can’t go wrong with bottom airflow. This way you can swap between the two systems or just use both for a super-airy vape.

The section between the two airflow control rings on the Kizoku Unlimit is actually a release mechanism for the rebuildable base. You just pull it upwards toward the tank section and pull the base off. It’s pretty simple, but you also have to be careful when reinserting the base into the tank. I always found myself tugging at the bottom section, just to make sure it was firmly attached, and I recommend you do the same, as the last thing you want is for the tank to fall apart while you vape.

The Kizoku Unlimit is just as innovative on the inside. The atomization chamber is spring-loaded, so that the inner walls are pushed up when you connect the rebuildable build-deck, but drop down when you remove it, essentially covering the e-liquid wicking slots to prevent leaking. It’s a cool design that I personally haven’t seen before.

The build deck is a simple postless design with small flat-head screws on one side and large wicking slots on the other. It screws on to the bottom section of the Unlimit RTA, but if you want to switch to sub-ohm tank mode, all you have to do is unscrew the build deck and pop in the included sub-ohm coil, or any other Falcon-style coil-head, for that matter.

Not only does the new Kizoku Unlimit feature two styles of airflow, but it also comes with an airflow reducer that connects to the central airflow slot of the build-deck, allowing you to customize your vaping experience even more. I prefer a more restrictive lung-hit, so I have been using the RTA with the reducer installed from the get-go.

To switch from RTA to sub-ohm tank, all you have to do is remove the bottom section by lifting the release mechanism in between the two airflow control rings, unscrew the build deck from the base and pop in the coil-head. Then it’s time to remove the chimney section. While holding the upper airflow control ring firmly with your fingers, unscrew the chimney and atomization chamber from the top cap. Put it aside and then simply screw the base with the coil-head attached straight onto the top cap and you’re done.

As i mentioned in the beginning, the Kizoku Unlimit comes with a fill port extension that significantly increases its e-liquid capacity. The cool thing about it is that it can be used in both forms (RTA and tank) and is super easy to use. All you have to do is take off the top cap and screw it onto the original fill port. Granted you are going to end up with a ridiculously tall RTA, but it doesn’t look too bad on the tank.

Kizoku may be new to the game, compared to companies like GeekVape or VandyVape, but they are definitely here to play. The new Kizoku Unlimited is one of the coolest, most innovative atomizers I have seen in a while, and the build quality is above average as well. Now let’s see how it vapes:

How the Kizoku Unlimited Vapes

Let’s start with the Unlimited in RTA form. Mounting the two included coils on the postless deck is a piece of cake, as all you have to do is position the leads in each of the four holes, cut the leads at the length you prefer, and then adjust the coils and get rid of any hot spots. Wicking is straightforward as well, just make sure not to stuff the wicking ports on the bottom of the build deck with cotton. That would make it harder for the juice to reach the coils fast enough, so just make sure the cotton leads barely reach into the ports to prevent e-liquid from flooding the atomization chamber.

Thanks to that airflow reducer, you can actually use the Kizoku Unlimited RTA in single-coil mode, not just dual-coil, which is not something you see on similar products nowadays, but that’s just one of the ways in which you can customize your vape.

The dual airflow system lets you experiment with various degrees and styles of airflow to reach your personal sweet spot. You can turn either the bottom or the side airflow all the way off and leave the other wide open, or you can use them both only slightly open, or wide open for a very, very airy vape. It’s all up to you, but the thing to take away here is that you have loads of options.

I personally prefer the bottom airflow, even though I know a lot of people who swear by side airflow. I feel that it gives me the most flavor, although to be honest, that depends on your build, the quality of the wicking and the power output on the mod. I did mess with side airflow as well, and it wasn’t a bad vaping experience, but in the end I switched to bottom airflow. I couldn’t use both in tandem, because it was way too much airflow for my liking.

In tank mode, the Kizoku Unlimit turns into a stubby powerhouse, thanks to the 0.15Ω mesh coil-head that produces impressive amounts of vapor as well as plenty of flavor. Just make sure to increase the power output on the mod gradually, as the proximity of the coil-head to your mouth can result in some really hot vapor. I actually like my vapor on the hot side when vaping in DL mode, but that’s just me.

To be honest, I found myself using the Unlimit in sub-ohm tank mode a lot more than the RTA, simply because it was much more convenient. The coil-head performed beautifully, and I didn’t have to worry about the wicking or leaking problems. Plus, that fill-port extension meant that I didn’t have to worry about running out of juice too fast.


The Kizoku Unlimit was a very pleasant surprise. It’s true that after having reviewed the fairly average Kizoku Limit MTL RTA earlier this year, my expectations were pretty low, but the innovative design and versatility of Kizoku’s new sub-ohm atomizer really blew me away. I don’t know how well the Unlimit is going to sell, considering Kizoku is still not an established vaping brand, but I truly hope people give it a chance, because it really is one of the most interesting atomizers released in 2020.

The Kizoku Limit was sent to me by Heaven Gifts, for the purpose of this review. They currently have it in stock for $44.90.

  • innovative design
  • dual airflow systems
  • modular design
  • impressive performance
  • great value for money (2in1)
  • too tall for my taste
  • not the most beginner friendly

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