Huma FX Impact Power Tuning Kit

Huma-Air FX Impact Slug Power Tuning Kit V2

Dual Hole Transfer Port. High Flow Pin Probe. Two Hammerweights.

The Huma-Air FX Impact Slug Power Tuning Kit V2 is a precision-engineered performance upgrade for FX Impact owners who want to maximize velocity and airflow efficiency when shooting slugs and heavy projectiles. Featuring the innovative V2 Dual Hole Transfer Port, High Flow Pin Probe, and two progressive hammerweights — this kit delivers 30–40 FPS gains in Huma-Air's own testing without changing any other variables.

Overview

The V2 kit attacks slug performance on three fronts. The Dual Hole V2 Transfer Port's V-shaped opening maximizes air passage area for the smoothest, most efficient airflow behind the projectile. The middle support bridge divides the port into two holes while preventing the pellet or slug nose from falling into the enlarged opening — guiding it smoothly into the barrel every time. The High Flow Pin Probe complements the transfer port by maximizing airflow behind the projectile, and the two included hammerweights — one slightly heavier than factory, one heavier still — allow progressive tuning for optimal velocity gains.

Key Features

• V2 Dual Hole Transfer Port with V-shaped opening for maximum air passage area
• Middle bridge support prevents pellet/slug nose from falling into enlarged port — guides projectile smoothly into barrel
• High Flow Pin Probe for maximum airflow behind the projectile
• Two progressive hammerweights — one slightly heavier than factory, one heavier still
• 30–40 FPS velocity gains in Huma-Air's own testing
• Available in .22, .25, .30, caliber
  
  

Performance Advantage

• V-shaped transfer port opening delivers the maximum possible air passage area for improved slug propulsion
• Dual hole design with middle bridge eliminates pellet nose drop into the transfer port for consistent, smooth feeding
• High Flow Pin Probe maximizes air delivery behind the projectile for increased velocity
• Two-stage hammerweight system allows progressive tuning — start with the lighter weight and step up as needed
• 30–40 FPS gains without changing any other variables — meaningful improvement in slug performance
  
  

Compatibility

• FX Impact .22, .25, .30 — transfer port not included with these calibers

⚠️ .22, .25, and .30 caliber kits do not include a transfer port. 

⚠️ .35 caliber version is intended for NON-Power Block FX Impact models only.

⚠️ Will not replace single O-ring transfer port configurations.

What's Included

• 1x Dual Hole V2 Transfer Port and Pin Probe
• 2x Progressive hammerweights (light and heavy)