Magento 2 Bundle Items Inventory

Magento 2 Product Packs & Bulk Quantity Sync: Effortless Inventory Management for Kits & Bundles

Managing products made up of multiple components, whether they are bulk packs, DIY kits, tech bundles, or hardware sets, is notoriously complex for e-commerce brands. Standard Magento 2 falls short when it comes to tracking inventory for these “hidden” parts, exposing your store to overselling, fulfillment headaches, and lost revenue. The Magento 2 Product Packs & Bulk Quantity Sync extension solves this challenge by introducing robust component-level inventory management, finally putting you in total control. This blog explores how this module empowers store owners, inventory managers, and technical teams to streamline operations and boost profitability.

What Is Magento 2 Product Packs & Bulk Quantity Sync?

This powerful extension allows you to link any number of “child” simple products (components) to a “parent” simple product (main product). Unlike standard bundle products, this relationship is purely for inventory logic:

Automated Deduction: Selling the parent product automatically deducts stock from all linked child components based on defined quantities.
Smart Restoration: Refunds automatically restore the correct component quantities to inventory.
Dynamic Pack Availability: Automatically calculates and displays the stock status of pack sizes based on the available inventory of the individual unit.

Key Feature: Pack-Based Stock Display

One of the biggest challenges for merchants selling bulk packs (e.g., “Pack of 10,” “Pack of 50”) is keeping the pack stock synced with the single unit inventory.

The Problem: You have 100 single units in stock. You sell a “Pack of 10”. How does Magento know you now only have enough stock left for nine more packs? Standard Magento doesn’t.

The Solution: Our module now calculates availability dynamically.

Logic: Available Packs = FLOOR(Simple Product Stock / Pack Size Multiplier)
Validation: If stock drops below the pack size, that specific pack option is automatically disabled or marked “Out of Stock,” preventing overselling.

Real-World Scenarios

To understand the power of Magento 2 Product Packs & Bulk Quantity Sync, let’s look at two distinct business cases it solves perfectly.

Scenario 1: Synchronised Inventory for Organic Dog Treats

Context: Your store sells Organic Chicken Dog Treats as a single item and in bulk packs. You want to manage inventory from a single source.

Setup:
Go to your main product DOG-TREAT-001 and under bundle items add DOG-TREAT-10PK with pack size 10 and DOG-TREAT-50PK with pack size 50

Single Pack (Main Product): SKU DOG-TREAT-001 (Stock: 100 units)
Pack of 10: SKU DOG-TREAT-10PK (Deducts 10 units)
Pack of 50: SKU DOG-TREAT-50PK (Deducts 50 units)

Inventory Deduction on Purchase:
If a customer buys 2 x Pack of 10:

The system calculates the total units: 2 packs × 10 units = 20 units.
The Main Product (Single Pack) inventory is reduced by 20. So the main product Single Pack becomes 100 – 20 = 80 units.
The available stock for “Pack of 50” is automatically recalculated based on the remaining 80 single units (e.g., only 1 Pack of 50 is now available).

Inventory Restoration on Refund:
If that order is cancelled:

The system identifies the link and multiplier (10).
It restores 20 units back to the Main Product inventory.
The main product becomes 80 + 20 = 100 units.
All pack sizes instantly reflect the restored availability.

This automation ensures that whether you sell a single unit or a bulk case, your inventory numbers are always 100% accurate.

Scenario 2: Automated Inventory Deduction for Hardware Components

Context: Your website sells Coloured Click Rail Tracks (e.g., Silver, Black, Warm White) as installation-ready units. Each track unit requires specific hardware components to be included in the box.

Setup:
You define the following Bill of Materials (BOM) for one Silver Click Rail Track under “Bundle Items” when editing the product:

Click & Connect Connector: 8 units per track
#6 x 1.25″ Screw: 8 units per track
TripleGrip™ Anchor: 8 units per track

Go to Stores>Configuration>Scommerce Configuration>Bundle Items and make sure “Enable Qty Sync” is set to “No”

Inventory Deduction on Purchase:
If a customer buys 3 x Silver Click Rail Tracks:

The main track product stock decreases by 3 units.
The system automatically calculates and deducts the linked hardware components:
- 3 tracks × 8 connectors = 24 connectors deducted.
- 3 tracks × 8 screws = 24 screws deducted.
- 3 tracks × 8 anchors = 24 anchors deducted.

Inventory Restoration on Refund:
If a refund is processed for 2 units of that order:

The system restores 2 units of the main track inventory.
Associated hardware components are restored proportionally back to stock:
- 2 tracks × 8 = 16 connectors restored.
- 2 tracks × 8 = 16 screws restored.
- 2 tracks × 8 = 16 anchors restored.

This automation manages associations per colour variant, keeping hardware stock accurate across your entire catalogue without manual adjustments.

View Sample Product Demo →

Conclusion

The Magento 2 Product Packs & Bulk Quantity Sync extension is the missing link for any merchant selling composite products or bulk packs. By automating the complex math of inventory management, you eliminate overselling, reduce admin time, and provide a flawless experience for your B2B and B2C customers.

Ready to Try This Module?