Kitting Meaning: How The Process Works

Kitting in retail is the process of grouping related items into one ready-to-sell or ready-to-ship unit. It gives brands a way to fulfill product sets, gift boxes, subscription orders, and promotional offers more efficiently.

Companies use kitting to improve inventory management and order-fulfillment systems. In a 2025 Incora kitting case study, an aircraft engine manufacturer reduced engine build time by 33% after using kits that guaranteed 100% of the required parts were available. 

This guide covers the meaning of kitting, the process, and the benefits.

What is kitting?

Kitting is an inventory management technique that combines individual products into a single unit for shipping. Brands create kits their audience wants to buy. They use this method to reduce operational expenses and improve how they handle orders. 

Kitted items are in the same product category, such as yoga mats and yoga blocks or candles and wick trimmers. Sellers, kitting services, or third-party logistics (3PL) partners handle kitting during the fulfillment process.

Kitting vs. bundling

Kitting is an operations strategy, and product bundling focuses on merchandising. 

Kitting involves preassembling related items into one ready-to-ship unit with its own stock keeping unit (SKU). Warehouse teams pick and track the set as a single item to reduce handling steps.

Bundling groups products as a single offer to increase average order value (AOV) or move slow inventory. Items keep individual SKUs, and pick-and-pack teams pick each item during fulfillment. 

The product-bundling strategy has been a proven success for toothpaste brand HiSmile. Over 80% of orders are bundled products, which has increased the retailer’s average cart size fourfold.

Kitting vs. sub-assembly

Kitting can also be used to gather the parts needed for a job, as with the aircraft manufacturer example from the Incora study. A manufacturing kit can include the screws, wires, and components needed for a production run. Teams organize parts so workers speed assembly with fewer delays.

Sub-assembly, on the other hand, builds part of a final product. It combines components into an intermediate module, like a printed circuit board, that later becomes part of a finished product. 

A brand chooses kitting when grouping parts for final assembly or retail sale. They’ll choose sub-assembly for technical components that require permanent prefabrication before entering the main production line.

When to use kitting

Kitting creates operational advantages such as fewer picks, faster packing, and accurate inventory tracking. 

Before creating a kit, check order history, component availability, and storage space. These variables help determine if demand justifies building kits in advance.

Use kitting:

For products customers buy together

Brands kit products that customers purchase as a set. This process combines related SKUs into one unit (with its own new SKU) for picking and shipping. Examples include starter packs and gift sets.

For speed and order accuracy

Teams check components in preassembled kits before orders reach the packing line. Brands preassemble kits for high-volume products and subscription orders.

On-demand for unpredictable demand

On-demand kitting occurs when brands assemble a kit after a customer places an order. Brands keep components available for individual sale until they require a kit.

For stable demand: Pre-kitting

Pre-kitting is the assembly of kits before orders arrive. Workers pick one finished kit instead of assembling multiple components at the time of order. Brands don't pre-kit if they lack storage space for finished units.

Where is kitting used?

Kitting occurs throughout the supply chain to assist with inventory management and order fulfillment. 

In warehouses and distribution centers

Brands managing high-volume inventory use kitting in the warehouses where they store stock. Warehouse kitting organizes the space so pickers find the items needed for assembly line flow. 

Workers collect items for kitting, drop them at a station, and package them. Once they’ve created a new SKU for each bundle, they use barcodes to update inventory across all channels.

In manufacturing and material kitting

Kitting in manufacturing involves packaging products, components, or materials together. It’s also known as material kitting. 

Because manufacturing involves many moving parts, brands rely on kitting to provide workers with ready-to-assemble packages. This connects with the broader supply chain to reduce complexity from raw materials to finished goods and prevent assembly line delays.

In ecommerce and subscription-style orders

Ecommerce brands use kitting to fulfill recurring subscription boxes or promotional bundles. Kitting can be done in advance or when an order is placed for various items. 

For on-demand assembly, workers gather goods and bundle them so pickers spend less time locating individual pieces.

Examples of kitting

Kitting can help businesses in many industries manage inventory and speed up fulfillment. Specific parts differ, but the process is to organize individual items into ready-to-use units. 

These examples show how a stationery brand and a bicycle manufacturer use kitting to handle high volumes.

Retail

A stationery business selling wholesale greeting cards can group top-selling cards into a bundle for Valentine’s Day. They repeat the kitting process to prepare for high-volume sales.

The kitting process involves these actions:

1. Pick one of each card.
2. Package them into assembled kits.
3. Store them for shipping.

If they anticipate 50 purchases, they’ll repeat this process 50 times to create 50 parcels. Kitting helps them stay organized while managing supply chain logistics across sales channels like Amazon.

To ensure a smooth transition from assembly to shipping, the business stores prepared kits in a designated area so they can be located when an order is placed. 

When the kits are ready, the business attaches a postage label and ships the parcel. They can prepare all 50 labels in advance since every kit weighs the same.

Manufacturing 

For this example, consider a bicycle manufacturer preparing to assemble 100 custom commuter bikes. 

Each bike needs these parts:

• Frame
• Handlebars
• Brake cables
• Pedals
• Tires
• Reflectors
• Hardware pack with screws, washers, and bolts

The manufacturing kitting process involves gathering all components for a single bike into a single package, rather than collecting parts from different bins during production. The team will produce 100 individual kits if they plan to build 100 bikes that week. Each kit contains the parts required for one finished bike.

They then place the finished kits in a staging area near the assembly line. Workers pick one kit at a time when production begins. They don’t need to stop to search for parts or check inventory. 

The kitting process

The kitting process varies between brands. They define their workflow based on product types and assembly methods. 

Follow these steps to kit products:

1. Identify the items or components.
2. Decide whether to pre-kit or assemble on demand.
3. Assemble and package the kit.
4. Assign a kit SKU and track components.
5. Stage, fulfill, and update inventory.

1. Identify the items or components

Decide which items to group. Brands group products by use, such as candles and candle wicks, or by theme, like holiday decorations. Other options include grouping by color for Fourth of July celebrations, or creating promotional bundles with a free gift.

2. Decide whether to pre-kit or assemble on demand

Choose between preparing kits in advance or building them after a customer completes a purchase. There are two options:

• Pre-kitting involves assembling bundles before sales occur. 
• Assembling on demand means staff build the kit only when an order arrives.

Pre-kitting speeds up shipping for high-volume products. Assembling on demand keeps inventory flexible because components remain separate until needed. A brand doesn’t tie up stock in a bundle that might not sell.

3. Assemble and package the kit

Select packaging and assemble the bundle. Use a box large enough for all items but small enough to keep items stable and prevent damage during shipping. 

Fragile items like glass require padding. Use bubble wrap or biodegradable packing peanuts to protect the contents.

4. Assign a kit SKU and track components

Assign the kit a unique SKU. While a kit contains multiple items, it functions as a single product once packaged.

In Shopify, organizations can add SKUs and barcodes to products and variants. SKUs help with internal tracking, reporting, picking, and packing, while barcodes support scanning workflows.

5. Stage, fulfill, and update inventory

Set aside a specific section in the warehouse for finished kits. This designated area helps staff find kits when orders are placed. Organized storage reduces the time needed to fulfill an order.

Apply shipping and tracking labels to the kit. Ship the package and send the tracking number to the buyer. 

Businesses can buy and print shipping labels from the Shopify admin, then add tracking information during fulfillment. Once a tracking number is added, customers can follow the delivery through the order status page, shipping notification emails, and the Shop app.

How to manage inventory and SKUs for kits

Managing kit inventory involves tracking both the finished offer and its individual parts. This helps fulfillment teams stay accurate throughout the packing process.

Track the kit as a sellable unit

The kit SKU helps customers, reports, and teams identify the offer. Component SKUs enable fulfillment and inventory accuracy.

Assign the kit its own SKU for the offer customers see. Maintain a clear component list so the warehouse knows what goes into each unit and can flag shortages before they stall an order. Treat the kit as its own product record, especially when it's preassembled or marketed as one product.

Track each component to avoid stockouts

A kit is in stock only when all required components are available. If a skin care kit requires one cleanser, one moisturizer, one insert, and one branded box, a shortage of any item will stop the order. Tracking the finished offer without the parts causes fulfillment delays. 

Use packaging hierarchy and barcoding rules consistently

Barcoding matches how inventory moves through the warehouse. Standardizing labels across the supply chain guarantees accurate scans.

Each level in the packaging hierarchy needs its own identifier so fulfillment teams can scan the right item at every stage.

Assign identifiers based on the level handled:

• Individual unit
• Inner pack
• Case
• Mixed case
• Pallet
• Display shipper

GS1 US defines packaging levels as a hierarchy. They start with each unit and move up through cases and pallets. For a physical kit, the kit barcode is the visible identifier for the scanner.

Benefits of kitting

Understand how kitting improves order accuracy, reduces labor costs, and increases the value of every shipment. 

Faster fulfillment

Staff don’t pick each component of a bundled order individually. They assemble kits in advance when they sell certain products together.

MAG45 reported that a high-tech manufacturer reduced order lines by 89.6% after they implemented kitting. This manufacturer reached 100% on-time in-full (OTIF) delivery. 

Preassembling repeatable orders reduces the time between order placement and shipment. Research also indicates that faster delivery speeds lead to higher customer satisfaction. 

Better order accuracy

Kitting improves accuracy when workers check kits against a bill of materials. A 2026 Productiv case study found that accuracy reached 99% within 30 days of fixing kitting workflows. Using a single kit SKU reduces the chance of missing an item in that kit.

Lower pick-and-pack labor

The picking-and-packing process accounts for 55% of labor time and up to 75% of warehouse operating costs in order fulfillment, according to a 2025 study. These labor costs often stem from inefficient movement, making travel-time reduction a target for operational savings.

Kitting reduces labor by cutting travel and handoffs. A 2025 Springer study found optimized batch picking reduced travel distance by 27.25%. Productiv also reported a 20% to 50% throughput improvement without adding kit-line headcount in a 2026 medical-device case.

Better use of storage space

Kitting helps businesses use storage space efficiently by organizing items that they sell together. MAG45’s 2025 case study found kitting helped a manufacturer minimize unnecessary storage.

This process helps manage rising SKU counts. A 2025 survey found 33% of respondents planned to add square footage to their facilities because receiving areas are congested.

Higher average order value and dead-stock movement

Kits and bundles increase average order value (AOV) when products are complementary. Lvly saw a 6% year-over-year AOV lift from bundled products. It’s also a way to move stagnant inventory by pairing slow-moving products with relevant popular items.

Common kitting pitfalls

Kitting errors lead to inventory gaps and increased shipping costs. 

Identifying these mistakes maintains organized retail operations:

1. SKU and component-tracking errors: Items get mixed up during assembly. Assign unique SKU numbers to kits and use barcode tracking to update inventory levels.
2. Over-kitting and unsold inventory: Use historical sales data to forecast demand. If volumes are uncertain, consider a kitting-on-demand model to reduce unsold stock.
3. Workflow and staging issues: Cluttered spaces cause picking errors and waste time. Set up a dedicated assembly station with visual guides and standard operating procedures (SOPs).
4. Quality control misses: Rushed assembly results in damaged kits. Add quality-control checkpoints and use protective packaging to reduce returns.
5. Shipping inefficiency and dimensional-weight waste: Incorrect box sizes and excessive packaging materials increase shipping costs. Use right-sized packaging and monitor weight charges to control expenses.
6. Warehouse safety and ergonomics considerations: Heavy items and cluttered areas increase injury risks in warehousing, according to the Occupational Safety and Health Administration (OSHA). Keep high-use components at waist height and use carts for heavy products. Rotate tasks and keep workstations clear.