YakAttack ShortStak Upgrade Kit for BlackPak Pro - Adds a Second Layer

Our review of the YakAttack ShortStak Upgrade Kit for BlackPak Pro finds it best for anglers and paddlers who need a compact, secure way to expand on-boat storage without replacing their existing crate. The main reason to buy is simple: it converts a 13 in x 16 in BlackPak Pro into a two-layer system that keeps tackle, tools, and quick-access gear organized and within reach. Assembly is straightforward and the kit uses the same shared components as the BlackPak Pro so it stacks cleanly and feels like a native extension rather than an afterthought.

Key Features

• Maximize kayak storage: Expands a 13 in x 16 in BlackPak Pro into a second layer to separate frequently used items from bulk gear for faster access on the water.
• Top-mount add-on: Designed to sit on top of an existing crate so you keep the original BlackPak Pro base and gain a tidy stacked system without extra mounting hardware.
• Multi-sided GridLoc panels: Internal and external GridLoc compatibility lets you attach MightyMount-style accessories and small TracPak-style organizers where you need them.
• Marine-ready materials: Injection-molded polymer, rubber bumpers, and stainless steel hardware resist saltwater exposure and hold up in kayak use.
• Full install kit included: Comes with panels, latches, hinges, straps, and hardware so the upgrade stacks securely with tongue-and-groove joints and fast assembly.

Who It's For

This kit is ideal for kayak anglers and day paddlers who already own a 13 in x 16 in BlackPak Pro and want organized, quick-access storage for tackle trays, tools, or small electronics. It suits users who value modularity and the ability to customize internal and external attachment points with GridLoc-compatible accessories.

It is not for someone expecting a freestanding crate; the ShortStak Upgrade Kit is not a standalone box and will not replace a base BlackPak Pro. If you need a single large waterproof box or do not own the compatible BlackPak Pro, look at full crate options instead.

Pros & Cons

Pros

• Significantly increases usable storage without adding deck clutter by stacking on the existing BlackPak Pro.
• Durable, marine-grade materials and stainless hardware that handle saltwater conditions.
• GridLoc panels expand customization options and accept popular accessory mounts for internal and external configuration.
• Complete hardware kit makes installation quick and secure with tongue-and-groove joints.

Cons

• Not a freestanding crate, so it requires owning the 13 in x 16 in BlackPak Pro base to be useful.
• Some customers feel the price is on the high side compared with basic crate extensions.

Specifications

Product type	Stackable crate extension
Compatible size	13 in x 16 in BlackPak Pro
Included components	Panels, latches, hinges, straps, and hardware
Materials	Injection-molded polymer, rubber bumpers, stainless steel hardware
Mounting style	Top-mount, tongue-and-groove stacking
Accessory system	Multi-sided GridLoc compatibility

Our Verdict

The ShortStak Upgrade Kit is a practical, well-built way to expand an existing 13 in x 16 in BlackPak Pro into a neat two-layer crate. Kayak anglers who already own the BlackPak Pro will appreciate the added organization, GridLoc compatibility, and marine-ready construction; those without the base crate should budget for both components. Overall it is a convenient modular upgrade worth the investment for users who want tidy, customizable storage on the water.

Frequently Asked Questions

Do I need the BlackPak Pro to use this kit?
Yes. This is a top-mount add-on and is not a freestanding crate; it installs on a 13 in x 16 in BlackPak Pro.

Are accessories compatible with the GridLoc panels?
Yes. The multi-sided GridLoc panels accept compatible accessory mounts and TracPak-style organizers for internal and external customization.

Is the kit suitable for saltwater use?
Yes. It uses injection-molded polymer, rubber bumpers, and stainless steel hardware designed for marine conditions.