Bonza Pro RTA: the complete Thunder Cloud guide
A rebuildable tank that swaps its chamber to match the build is not a common sight on a British shelf. The Bonza Pro RTA arrived with exactly that promise and a name already familiar to deck builders here, carried over from the dripper that came before it. Listings set out the specification, rarely what it implies once the thing is in your hand. This guide follows the logic of the model from end to end.
What the Bonza Pro RTA is
The Bonza Pro RTA is a 26 mm rebuildable tank born of a collaboration between manufacturer Thunder Cloud and British reviewer Vaping Bogan. Its claimed distinguishing feature is a pair of interchangeable vaporisation chambers, one intended for a single coil, the other for two.
It extends a range that previously existed as a dripper, with no reservoir at all. Moving to the tank format keeps the deck and the spirit of the model, adding a liquid reserve and a top fill.
The product is aimed explicitly at vapers who already build their own coils. It is neither a first purchase nor a device you put into service without knowing how to measure a circuit on an ohm meter before it sees any power.
The specification as sold in Britain
The figures below are those published by the UK retailers who stock the model, cross checked between several shops. They form the basis for the rest of this guide, which then looks at what they mean in practice.
| Feature | Stated value |
|---|---|
| Type | Rebuildable tank atomiser (RTA) |
| Diameter | 26 mm, 30 mm at the widest point of the bulb glass |
| Height | 40.5 mm excluding drip tip |
| Capacity | Restricted to the British 2 ml cap on refillable tanks |
| Deck | Curved postless, single or dual coil |
| Chambers | Two supplied, interchangeable |
| Airflow | Tri-directional, top down |
| Filling | Top fill, quarter turn cap |
| Drip tip | 810, 510 adapter supplied |
| Material | Stainless steel, 510 connection |
Two four core Fused Clapton coils come in the box, along with a cutting jig, a screwdriver, an Allen key and a set of spare parts. Thunder Cloud also advertises a lifetime warranty on the model, a rare mention on this type of product.
The chamber system at the heart of the model
This is what justifies the Pro suffix and what separates the device from the ordinary run of tanks. The principle is simple to state, its effects on the result less so, and they deserve separating out.
The single coil chamber draws the internal volume tight around one heating element. The path taken by the vapour shortens, flavour concentration rises, and the draw closes naturally towards a restricted direct lung. That configuration uses less liquid and asks less of the cells, and on the Bonza Pro RTA it corresponds to everyday use for anyone who prefers detail over volume.
The dual coil chamber frees the space two builds need and opens the draw. Vapour volume climbs noticeably, perceived warmth with it, and liquid consumption follows the same curve. Swapping from one chamber to the other is done by screwing it onto the deck, without a special tool, but it is a full rebuild rather than an adjustment: the tank has to be emptied first.
The point of that interchangeability is not to double performance but to avoid buying two atomisers. One body covers two uses that elsewhere would normally require two separate references. The limit is one of method: fitting a single coil in the chamber meant for two cancels most of the benefit, since the volume becomes too generous for the heating surface installed.
The curved postless deck
The deck is where a rebuildable is judged, long before its looks. This one belongs to a family that now dominates British listings, with a shape variation worth pausing on.
The postless principle removes vertical posts in favour of horizontal slots into which the legs drop before side screws clamp them. The build gains available room and simplicity of positioning, which is exactly why UK forum threads on this model keep returning to how easy larger builds are to seat.
The curvature of the deck is the house variation here. By hollowing the working surface, it frees height around the wraps and eases the placement of bulky builds such as the Fused Claptons supplied in the box.
The platform is quoted at 12 mm across, which leaves comfortable margin for coils of common diameter. The cutting jig in the box earns its place, because a postless deck demands legs cut to the right length before clamping. Whatever goes on it, the finished build is measured on an ohm meter and the reading confirmed once the chamber is closed, before the tank ever meets a cell.
Airflow, filling and what British rules change
Two points on which RTA manufacturers rarely distinguish themselves, and on which this one has clearly done some work. They shape daily use far more than any headline figure.
Air enters through openings in the top cap, travels down the body, then meets the coil from three angles. That descending path has a structural advantage: by separating the air entry from the liquid zone, it sharply reduces the opportunities for leaking from the base.
Filling is done from the top, turning the cap a quarter turn to expose the port. No full unscrewing, no dismantling of the tank, which limits the handling during which a seal goes missing.
Then comes the point a British buyer has to get right. Refillable tanks sold here are capped at 2 ml, nicotine containing e-liquid at 20 mg/ml and those bottles at 10 ml, so the two glass shapes supplied change bulk and looks rather than running time. The bulb takes the widest point to 30 mm, a detail worth checking against a mod with a tight recess, and nothing on this shelf is for sale to under-18s.
Where this model sits in its category
The Bonza Pro lands in the middle of the British rebuildable tank shelf rather than at either extreme, and that placement is consistent with what it offers.
What it genuinely brings comes down to three things: the twin chamber system, the advertised lifetime warranty, and a complete accessory bundle that avoids buying tools straight away. Few competitors manage all three at once.
What it does not do has to be said as well. A diameter of 26 mm overhangs anything compact, and the twin chamber format imposes a full rebuild at each change of configuration. The Bonza Pro RTA is not an atomiser you flip between modes in a single gesture, and our overview of the four atomiser architectures gives the general grid it fits into.
Frequently asked questions
Does the Bonza Pro exist without a tank?
The range began with a dripper carrying the same name, released before this tank version. The two products share the spirit of the deck but not the parts.
Which finishes are available here?
UK retailers list several shades, among them brushed steel, matt steel, matt black and coloured limited runs sold separately from the standard line.
Is replacement glass available in Britain?
Yes, the shops that stock the model list the glass separately, which avoids replacing the whole atomiser after a breakage.
Do you need a particular drip tip?
An 810 tip is supplied in the finish of the model, and an adapter allows a personal 510 tip to be fitted. Both formats are therefore usable.
Is it suited to mouth to lung?
That is not its purpose. The maker points the product at direct lung and its restricted variant, the single coil chamber being the tighter of the two.
Does the Bonza Pro RTA earn its place in a setup
The Bonza Pro RTA is a coherent model: every technical choice, from the curved deck to the descending air path, serves the same idea of deliberate versatility. It suits a user who genuinely alternates between two configurations, not one who will always build the same thing.
For anyone already building coils and looking to cover two uses with a single body, the proposition stands up. For everyone else, a single configuration atomiser will do the same job with fewer manipulations, as the comparison with tankless formats makes plain.
Editorial content for adult readers only. Vaping products usually contain nicotine, a substance that causes addiction. Not for sale to under-18s in the United Kingdom. This article is not a buying recommendation.
