Adjustable Tuttle Box V4

Adjustable Tuttle Box v4

The Adjustable Tuttle Box V4 provides 2" of mast-position adjustment in 1" increments, allowing you to fine-tune foil position for your board and riding style.

Included Shims

One set of 0° injection-molded shims and barrel-nuts is included with every Adjustable Tuttle Box.

Choose your barrel nut thread at checkout:

• M6
• 1/4"-20

Additional straight and angle shim packs are available separately for further tuning. Contact us for custom shim options.

Required Installation Tools & Parts

Adjustable Tuttle Drill Guide — Required
The Adjustable Tuttle Drill Guide ensures correct hole spacing and alignment during installation. The drill guide is reusable and only needs to be purchased once.

G10 Top Cap — Required
Each board installation requires one G10 Top Cap.

Both can be selected when adding your Adjustable Tuttle Box to your cart.

Performance

Designed for high-performance wingfoiling, parawing, downwind foiling, and pump foiling.

Optimized for MikesLab, F4, Hydrocraft, Slingshot, Levitaz, and Chewbanga Tuttle masts.

• Optimized carbon layup for high stiffness and responsiveness
• Excellent pumping, turning, and foil response
• 475g including shims
• Constructed from high-quality aerospace and marine-grade materials

Compatibility

Built to the original Larry Tuttle "Tuttlebox" specifications and compatible with Tuttle masts.

Overall dimensions:
2.75" wide × 9.5" long × 6" tall

When in doubt, choose a Tuttle Box taller than your board and trim it to achieve a precise fit.

Have questions about compatibility, installation, or shim selection? Contact us — we're happy to help.