Arrow Guru 8.1 GPI 0.001 1 DZ Shafts

These 8.1 GPI 40-ton high-modulus carbon shafts are custom-made to deliver elite performance for today’s high-speed crossbows. At a true 150 spine, these shafts match the stiffness profile of the most respected heavy-duty shafts in the industry. Making them exceptionally stable under extreme acceleration.

The lighter 8.1 GPI construction allows you to run heavier front-end components while keeping total arrow mass in your desired range. This combination yields superb broadhead flight, tight grouping, and outstanding long-range performance.

Specifications:

• Material: 40T high-modulus carbon

• Weight: 8.1 grains per inch

• Outer Diameter: 0.341"

• Inner Diameter: 0.300"

• Static Spine: 150 spine (industry-leading stiffness in this weight class)

• Straightness: ±0.001"

• Finish: Precision plain carbon

• Quantity: 12 shafts

Performance Advantages:

• Ideal for 400–520 FPS crossbows

• 150-spine stiffness holds arrow shape under heavy launch loads

• Extremely consistent seam alignment—excellent for spine indexing

• Lightweight enough for speed builds, stiff enough for perfect broadhead control

• Outstanding for high-FOC setups using heavy inserts and 200–300 grain broadheads

Who These Are For:
Shooters who want speed, precision, and stiffness in the same arrow platform—perfect for long-range hunting, ladder-stand shots, and field tuning where repeatability matters.