Innokin Ajax Sub Ohm Tank

Twenty-four millimetres wide, built around Innokin's Plex3D Matrix mesh coils, and one of the few sub-ohm tanks from a brand better known for MTL hardware. The Ajax holds 2ml under UK TPD and uses a sliding top-fill system that opens without removing any components.

Dual adjustable airflow sits at the base, giving you control over how open the draw runs. 510 threaded, so it goes onto any mod that supports the connection. Two coil options: 0.16ohm at 50-80W for clouds and 0.35ohm at 30-55W for a more restrained draw. Three colours available.

Why vapers choose this:

• Plex3D Matrix coils use a three-dimensional mesh pattern that heats liquid from multiple angles rather than just the surface, which gives noticeably better flavour extraction compared to flat mesh designs

• Sliding top fill opens with a push rather than unscrewing, meaning one-handed refills are genuinely possible when you are on the go

• 24mm diameter keeps it compact enough for smaller mods while still fitting a proper dual-airflow system and decent coil chamber

• Two coil resistances cover both full DTL at 80W and a more moderate 30-55W draw, so the tank works across a wider wattage range than most single-coil sub-ohm setups

• 510 thread fits any compatible mod from Innokin's own lineup or from other brands, no adaptor needed

Innokin Ajax Sub Ohm Tank Features

Plex3D Is Not Standard Mesh

Most mesh coils use a flat strip. The Plex3D Matrix coil uses a three-dimensional mesh structure instead, folded in a way that creates multiple contact points with the e-liquid. In practice, that means more of the liquid is being heated at once, and the flavour comes through with more depth. Innokin built this coil specifically for the Ajax, and it shows.

Sliding Top Fill Is Genuinely Useful

Push the top cap to one side, and the fill port opens. No unscrewing, no pulling, no twisting. You can do it with one hand while the tank is still attached to the mod. Gravity handles the rest. The silicone seal around the port keeps liquid from leaking out when closed. A small thing, but it makes a real difference when you refill two or three times a day.

24mm and Still Room for Airflow

A lot of 24mm tanks sacrifice airflow design to keep the diameter down. The Ajax manages to fit dual bottom airflow slots into that 24mm body. Both are adjustable, and both actually change the draw when you turn the ring. From wide-open DTL clouds to a more focused restricted draw, it covers enough ground to keep most sub-ohm vapers happy.

Glass Body, Steel Frame

The tank section is glass. Durable, easy to clean, and gives you a clear view of your liquid level. The top cap and base are stainless steel. It looks clean on a Vape Mod without adding unnecessary bulk, and the steel components hold up to regular use without showing wear quickly.

Designed for the Proton Mini but Not Locked to It

Innokin built the Ajax to ship with the Proton Mini kit, but the 510 threading means it works independently. If you already own a mod and want to try Plex3D coils without buying a whole new kit, this tank is how you do that. Any 510 mod that reaches 50W or higher will drive it properly.

Innokin Ajax Sub Ohm Tank Colours

Three finishes. All stainless steel hardware with glass tank bodies:

#buttons

• Black
• Blue
• Stainless Steel

How to Set Up the Innokin Ajax Sub Ohm Tank

1. Unscrew the base of the tank and push a Plex3D Matrix coil into the base section until it seats firmly.

2. Drop three to four drops of e-liquid onto the cotton through the coil's exposed wicking slots.

3. Screw the base back onto the glass section, then attach the tank to your mod via the 510 thread.

4. Slide the top cap open and fill with 70/30 Shortfills or high VG freebase liquid up to the fill line.

5. Close the top cap and leave the tank standing upright for a good six to eight minutes before you fire it. Let the Plex3D mesh saturate fully.

6. Start vaping at the low end of the coil's wattage range and bring it up gradually.

What's in the Innokin Ajax Sub Ohm Tank Box

One Ajax Sub Ohm Tank in your selected colour. Coils are typically sold separately unless bundled with the Proton Mini kit. Check the product listing to confirm whether a coil is included or if one needs to be ordered alongside.

Fits Any 510 Mod in the Innokin Range and Beyond

The Ajax uses standard 510 threading. It was designed as the tank component of the Proton Mini Ajax kit, but it works as a standalone tank on any mod with a 510 pin that pushes 30W or higher. The 24mm diameter sits flush on most mid-range and full-size mods without overhang.

The tank runs on Innokin's Plex3D Matrix coils exclusively. Those are sold as Innokin Ajax replacement coils. Other Innokin coil platforms (Z coils, Endura coils, iSub coils) will not fit.

About Innokin

Innokin built most of its UK reputation on MTL Products. The Endura T18, the Zenith tank, the Zlide: all tight-draw, flavour-focused hardware aimed at ex-smokers. The Ajax was their move into sub-ohm territory, and they approached it the same way: engineer the coil first, then build the tank around it. The Plex3D Matrix was the result.

A three-dimensional mesh structure that heats e-liquid from multiple surfaces at once rather than relying on a single flat strip. Different approach from most sub-ohm brands. Typical Innokin.

Stock Up and Save

The Ajax is a great tank, but it needs coils. Check whether the listing includes one, and if not, add a pack of Plex3D replacements to the basket alongside the tank itself. Every order from Pirate Vapes ships the same day before 4 pm in protective packaging. All products are TPD compliant, with an age-verified checkout, over-18s only. Free Pirate Post on orders over £25.

Conclusion

The Innokin Ajax brings Plex3D mesh coils, sliding top fill, and dual adjustable airflow into a compact 24mm body. It is a sub-ohm tank from a brand that normally does MTL, and the engineering carries over.

If you own any 510-threaded mod and want strong flavour from a well-built Vape Tank, the Ajax is worth trying. Browse the full range at Pirate Vapes.

FAQs

What coils does this tank use?

Innokin Plex3D Matrix coils. Two resistances: 0.16ohm at 50-80W and 0.35ohm at 30-55W. Both kanthal mesh. No other Innokin coil fits this tank.

Will it fit on a non-Innokin mod?

Yes. Standard 510 thread. Works on any mod that reaches the wattage range these coils require, roughly 30W minimum.

What e-liquid ratio works best?

70/30 VG/PG or higher with freebase nicotine at 3-6mg. Sub-ohm coils at this wattage are not suited for nic salts or 50/50 blends.

How do I refill the tank?

Slide the top cap open. Fill through the exposed port. Slide it closed. Takes seconds and can be done one-handed.

Does it come with a coil installed?

Check the listing carefully. When sold as part of the Proton Mini kit, coils are included. When sold as a standalone tank, coils may need to be purchased separately.

What diameter mod does it need?

The tank is 24mm wide. It sits flush on most 24mm and wider mods. On narrower devices, it may overhang slightly.