Kit Builder Interactive is probably the best way to upsell and cross-sell on your BigCommerce store. It offers essential features like bundling, a pick list (right at the top of the main product page), and now the ability for your customers to interactively customize and configure the bundle they prefer!
All of this comes with automatic inventory control and the ability to always have the maximum quantity of kits, bundles, and components available.
Read the full description below, watch a demo video (below or on our YouTube channel), or start a free demo today. We are confident your ROI and payback time for the app fee will truly impress you - and hundreds of KB long-term customers back up our belief!
Maintaining control of your component inventory with kits in BigCommerce is practically impossible without a purpose-built solution. Take back control and automate the majority of your kitting inventory operations with Kit Builder.
Kit Builder has two important features: automatic component subtractions when kit products sell in your store, and "Total Available" kit quantities pushed dynamically from Kit Builder to kit products based on the number of available components. These two features together ensure that you can always sell the maximum number of kits or components without overselling, and have accurate inventory levels for both types of products at all times.
If you prefer Kit Builder instead of inventory updates, can add component products directly to the order with the kit. Components can be added either with 0 price or replace the kit product in the order with weighted price.
Customizable kits. As a store admin, you can choose which option values for each component are available in the kit. For instance, if a product includes options like "Color" and "Size," you can specify that only product of White color and every Size can be part of the kit. This gives shoppers the flexibility to build kits that suit their exact needs. When a kit is sold, the selected components and their options are automatically deducted from your inventory. If you'd like the components to appear in the customer's order details, Kit Builder can handle that too - selected component variants will be added to the order.
Within Kit Builder, you first identify which of your BigCommerce skus are kits and specify their component skus and quantities. If you need to create a customizable kit, select the parent product for the component and specify option values that can be sold as the part of the kit.
Then the following automatic processes occur:
When the sale of a kit product occurs, the components required to assemble the kit are automatically subtracted from inventory. If you prefer, components can be added to the order instead.
When skus that are identified as components in one or more kits sell or their inventory level is edited, the number of kits that can be built is recalculated and the inventory levels for all affected kit products are updated.
up to 10 kit configurations: $20
up to 20 kit configurations: $30
Unlimited kit configurations: $50
14 days
$0
$20/mo.
July 8, 2025
This app may not be fully compatible with multi-storefront. Please get in touch with the technical partner for further details.
Kit and Catalog Management
Kits can be added, edited, and deleted
Kit can be either customizable so the shopper can select the option of the components or not customizable (in this case only fixed set of component variants are used)
Supports inventory tracking by product and by option
Use the notes field in each kit to specify assembly or packaging instructions
Multiple options for the display of kit sales in BigCommerce orders can be set
Kit Inventory Management
BigCommerce kit stock levels are updated immediately after sales of kits or components
Components are subtracted from inventory as kits that use them sell
Kit components for canceled orders are returned to stock
Use the list of kits to easily identify which components have low stock levels
Kits with an out of stock component are automatically put out of stock
Kit Fulfillment
Assemble Reports summarizes the list of kits to be built to fulfill current orders, and the pick list of components for those kits.
Detailed statistics page provides information about the sales of the kits in the specified period of time
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