FX Wildcat Internal Power Plenum XL 30cc
FX Wildcat Internal Power Plenum XL 30cc
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Huma-Air Internal Power Plenum XL Set 30cc for the FX Wildcat MKI and MKII. This set is the biggest plenum available and is the perfect base of you power tune.

€ 24,95
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FX Wildcat Internal Power Plenum XL 30cc


This Huma-Air Internal Power Plenum XL 30cc for the FX Wildcat can be placed into the pressure tube within a minute and replaces the original plenum.
It ads 30CC of volume of regulated air, what will give you the perfect base for a power tune of your FX Wildcat and is the biggest plenum availble in the Wildcat serie.
If you have previously bought a (power) tune Huma-Air regulator for your Wildcat; The Power Plenum XL  30cc is backwards compatible with our previous models regulators and also compatible with the FX Wildcat factory regulators. (Before fitting remove the lower o-ring of the regulator needs to be removed)
The power plenum is available as stand alone version or as a set with our Huma-Air Tuning Regulator here

The benefits of the Huma-Air Power Plenum XL 30cc for your FX Wildcat

  • Achieve maximum available power due to the huge (30CC) regulated air chamber
  • Higher accuracy of your rifle due to the elimination of the pelletspeed fluctuations
  • Your rifle can work with a lower regulator pressure due to the higer efficency
  • This set will give you a fantastic base for further tuning of your rifle


We use tracked priority shipping for this item. We can ship these parts seperately packed for safe and undamaged arrival in the country of destination.
As the purchasing party you are responsible for checking that this product is legal according to your local laws and regulations. We ship on your behalf and therefore Huma-Air can not be held responsible for any legal issues in the country of the recipient.



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David - 28-02-2021 12:28

Abserloutely faultless service and A+ product ,shipped to the UK 🇬🇧 in less than two weeks ,

Chris - 14-10-2020 21:21

Great product, unfortunately no good if your gonna put it in a sub 12fpe rifle, no increase in power or shot count, in fact the shot count was dramatically reduced. Also in a 26fpe wildcat there was zero gains in shot count. Probably works well in a more powerful gun but for the application I was looking for it didn't work. 👍🏻

Eddie hall - 13-10-2020 16:42

Great service, quick delivery to the uk

Steve mcneil - 19-09-2020 22:42

fits perfectly

Leandro - 05-06-2020 00:24

Excellent product, my Airgun is much better

Paul - 01-06-2020 22:59

Works perfect. Definatly worth buying.
Only took a week yo arrive. I can not fault any product huma sell. They are my go to for most items for my fx or impact.

Gareth - 01-06-2020 13:34

Cheap and simple way to lower your reg pressure whilst maintaining or increasing your FPS.
MK2 Wildcat .177
Standard Huma reg 130 bar, 870fps

Power Plenum installed, reg 100 bar, 880 fps. Can be increased if required.

Danilo Martínez - 28-05-2020 00:08

Excelente compra junto con mi regulador huma para mí fx wildcat MK2 en cal 30 , venía teniendo problemas con mi regulador original fx , luego de quitar el original fx y reemplazarlo por el regulador y el power plenum de huma tuve un cambio radical , disparos más consistentes , mayor conteo de disparos ,el regulador original fx lo tenía regulado a 150 bar y con el kit de huma pude rebajarlo a 140 bar . ahora consigo los mismos FPS , no sé cómo sucede pero así es 930 FPS con Pellets jsb de 44.75 grains . Ahora recomiendo a todos los reguladores y el power plenum de huma . pronto compraré también los manómetros de huma para cambiar el de fx.. el servicio de correo es excelente vivo en Colombia y pocos vendedores traen acá , huma lo hace y en poco tiempo . Gracias huma

Nisouck - 06-04-2020 17:11

Some time ago I buy the Huma-air regulator but don't intall it yet.
So, now I install the reg with the Plenum.

Not difficult to install and works wonderfull, I recommand both.

Graeme - 22-03-2020 22:04

Very surprising how such a cheap item to buy can be so effective.

Model: FX Wildcat MKII .22 (500mm) shooting JSB Exact Heavy 18.13gr

Current setting before installation.

130 bar reg pressure
Hammer spring 1 & 3/4 turns out from MAX

Setting after installation.
115 bar reg pressure
Hammer spring 2 & 1/2 turns out from MAX

Not only has this increased my air efficiency with a higher shot count from a lower reg pressure and less hammer spring tension, but also my groupings are tighter. This has also improved accuracy. A superb, value for money item.

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