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FX Impact Slug Power Kit

Main Product Rating 4.54.5 (4 reviews)
FX Impact Slug Power Kit

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Out of stock
Estimated in-stock date 04-30-2024. Place your order now for delivery priority!

Already pushing the boundaries of what is possible with airgun slugs, FX introduces their Impact Slug Power Kit to allow for even greater velocity and adjustability when shooting slugs.  The adjustable pin probe allows .22 and .25 caliber users to adjust the seating depth into the barrel of their slugs, this can prove critical to getting the very best accuracy with slugs.  

In addition, the kit comes with a lighter valve return spring and two hammer weight spacers which allow the user to push their Impact just a little bit harder to get added velocity that slugs crave!  If you are interested in getting the very best results shooting slugs from your FX Impact, pick up the Slug Power Kit today at Pyramyd Air!

FX Impact Slug Power Kit

  • .22 caliber adjustable pin probe with .25 caliber sleeve 
  • Lighter valve return spring - allows valve to stay open longer
  • Two hammer weight spacers - allows more hammer spring compression and added hammer weight
  • .22 caliber velocity increases between 35-55 FPS
  • .25 caliber velocity increases between 50-80 FPS

Please Note: When installing this kit on an Impact M3, the spring and rubber ball do not need to be used. 

This item is not eligible for coupon discounts

Item Code: FX20340 [PY-A-9604]

Average Customer Review

Rating 4.54.5 (4 reviews)
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Rating 4.04.0 4.0

Rating 4.04.0 4.0

Things I liked:

Does what its supposed to

What others should know:

Installation requires some "fancy" tools

Rating 4.04.0 4.0

Rating 4.04.0 4.0

Things I liked:

It''s nice to have your choice of the .22 or .25 units in one package. The seating depth of the projectile can be adjusted only slightly with a magazine but if you are shooting single shot without the magazine it can be adjust far more. This should help with accuracy. The lower rate valve spring and hammer spring shims are both a great touch for a more complete power up.

Things I would have changed:

The pin probe is a bit thin and bends too easy. A thicker pin would be better.

What others should know:

I picked up this slug power kit hoping it would give my Gen1 Impact more power. It's not really made for gen1 guns but for gen2 guns with a power plenum already installed. I did not get a boost in power from this kit even though I had the Polish plenum installed. Slugs jammed in my ported barrel inlet so I removed the pin probe and reinstalled my stock ported probe. I drilled my valve adjuster so I could move my valve spring to the outside like the gen2 guns and used the included spring and it werqs very well. It also allows me far more easy tuning options by just changing out the valve spring.

Rating 5.05.0 5.0

Rating 5.05.0 5.0

Things I liked:

A must for heavier slugs !

Things I would have changed:


What others should know:

This slug power kit along with a Huma Air dual hole transfer port gives you considerably more power , I highly recommend this combination for your FX Impact MK II .

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  • Don from USA asked:

    I want to shoot the jsb knockout slugs and pellets also with stx barrel. Will I need this and if I install this can I still shoot pellets?

    • Chris from USA asked:

      Will this slug power kit also work on the fx maverick?

      • fred from USA asked:

        will this work with my 35 impact with 22 convert barrel and slug liner

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