Terra Firma Fortis 4mm Shafts

Terra Firma Fortis Arrow

Pack of 12

The Terra Firma Fortis is a proven 4 mm hunting arrow designed to balance toughness, accuracy and penetration. Its slim profile reduces drag and improves down-range energy, while the reinforced outsert system strengthens the impact end of the shaft.

Each shaft is laser-checked and weight matched to maintain consistency across builds, making tuning easier and broadhead flight more predictable.

Designed primarily for hunting setups, the Fortis performs especially well with heavier point weights and higher FOC arrow builds.

If you would like these arrows fletched please jump onto our hand made arrows or custom arrow builder to design yours today.

Specifications

• Shaft Type: Micro diameter carbon hunting shaft .166" (4 mm) 

• Straightness: ±0.001"

• Weight tolerance: ±0.5 grains (matched sets)

• Shaft length: 32" (cut to suit) please select Arrow Cut product and specify length

• Outsert weight: 60 grains
  

Grains Per Inch (GPI)

• 250 spine — 13.0 GPI

• 300 spine — 10.8 GPI

• 350 spine — 9.5 GPI
  

Why We Like It

A strong option for hunters wanting durability without jumping to extremely heavy shafts — handles high FOC builds and broadheads well while still grouping consistently.

Recommended For

• Fixed blade broadheads

• High poundage bows

• Hunters prioritising penetration

• High FOC arrow builds