Bundle products, build gift sets, assemble subscription boxes, prep Amazon FBA bundles, and create finished sellable SKUs from raw components — at any volume, any complexity, any bill of materials. 3PLCity runs kitting and assembly from our Los Angeles fulfillment center for ecommerce, FBA, retail, subscription, and corporate gifting brands.
Scan-verified accuracy
Simple bundles to complex kits
New kit setup time
From 100 to 100K kits
A streamlined six-step process turns your raw components into accurate, scan-verified, barcoded kits — ready to ship the moment an order comes in.
You provide the BOM listing every component, quantity, packaging element, and assembly instruction for the finished kit. We map it into our WMS and train our assembly team on the spec before any kits are built. Sample kit assembled and approved by you before full production begins.
Components inbound from your suppliers via container, LTL, or small parcel — often from multiple vendors arriving on different dates. Each component received, counted, scanned into inventory, and staged by kit type for the planned assembly run. Multi-vendor coordination handled — products from five different suppliers arriving on five different dates all stage cleanly for the same assembly cycle.
Trained assembly staff build each kit per BOM at dedicated assembly stations. Quality checks happen at each stage of the build, not just at the end, catching errors before they propagate through a full run. Per-kit personalization, variant handling, and custom inserts executed per spec.
The finished kit gets a new sellable SKU with the appropriate barcode applied — UPC for retail and DTC, FNSKU for FBA-bound kits, custom internal SKU for B2B or wholesale channels. Polybag, label placement, suffocation warnings, and FBA prep requirements all handled in the same workflow.
Random sample inspection on every assembly run plus scan-verification of every completed kit before it enters sellable inventory. Mis-builds caught and corrected before kits hit the shelf, not after a customer reports the error. Photo documentation available on request for retail buyers requiring proof of compliance.
Finished kits enter your WMS inventory as a sellable SKU, ready to ship the moment an order comes in. Component-level tracking continues alongside finished-kit tracking, so you see both raw stock and built stock in real time. Kits fulfilled directly to DTC customers, prepped for FBA inbound, or shipped to wholesale retail accounts from the same inventory.
Purpose-built infrastructure, real-time technology, and hands-on service - all under one roof.
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Two-item bundles, gift sets with eight or more components, promotional kits, welcome boxes, sample packs, holiday assortments, PR seeding kits — any bill of materials, any complexity, from 100 units to 100,000 per run. No minimum kit complexity, no maximum component count.
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We create new sellable SKUs for every assembled kit, register them in your inventory system, and apply the appropriate barcode — UPC for retail, FNSKU for Amazon FBA, custom internal SKUs for DTC — alongside ongoing component-level tracking so nothing slips through the cracks.
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Assembled kits destined for Amazon FBA receive FNSKU labeling, polybagging, suffocation warnings, set-creation labels for multi-piece products, and box-level prep in the same workflow — eliminating the duplicate handling cost of running kit assembly and FBA prep as separate vendors.
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Need to change kit contents monthly, run seasonal variations, or A/B test different bundle compositions? We update BOMs on request and run multiple kit versions simultaneously. Holiday kits, Mother's Day bundles, Valentine's gift sets, Q4 assortments — handled without rebuild fees between cycles.
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Real-time visibility into raw component inventory versus kit demand. Low-component alerts fire before a planned run is at risk, giving you time to replenish from your supplier before assembly is blocked. Track both raw and built inventory simultaneously in one dashboard.
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Standard kitting projects configured in our WMS within 24 hours of receiving your BOM. Planned assembly runs scheduled to match your launch date, fulfillment timeline, or marketing calendar — not the other way around. Rush kitting available for time-sensitive launches at expedited rates.
Whether you need 100 kits assembled or 100,000, our infrastructure scales with your kitting program.
DTC and Shopify brands that want to offer multi-product bundles, value packs, or starter sets without managing assembly in-house or eating margin on labor.
B2B brands assembling branded gift boxes, employee welcome kits, client appreciation packages, event swag bags, and PR seeding packages with personalized inserts and consistent presentation across hundreds of recipients.
Kitting and assembly is the process of taking multiple individual components and assembling them into a single sellable unit — a bundle, gift set, subscription box, promotional kit, or any multi-product configuration that ships as one SKU. The finished kit gets its own barcode, its own inventory record, and is sold as a single product even though it contains multiple components sourced from one or more suppliers.
Kitting matters for ecommerce brands because bundles consistently outperform single-product listings on conversion rate, average order value, and customer lifetime value. A "starter kit" of four products at $80 converts at a higher rate than the same four products sold individually at $20 each — and improves your margin on every order. Subscription boxes, gift sets, value packs, and promotional bundles are all kitting workflows that drive measurable revenue lift when executed correctly.
3PLCity runs kitting and assembly at scale from our Los Angeles fulfillment center, handling everything from simple two-product bundles to complex multi-component gift sets with custom packaging, personalized inserts, and per-subscriber variants — from 100 units per run to 100,000+ units per run.
Kitting is time-intensive and error-prone when done in-house. Assembly line efficiency requires volume, trained staff, dedicated workspace, scan-verification systems, and quality control processes that most brands cannot sustain economically without dedicated warehouse infrastructure. Founders end up packing kits themselves on weekends instead of focusing on product, marketing, or growth — and a single mis-built kit shipping to a customer turns into a negative review that lives forever.
3PLCity runs kitting operations across multiple kit programs simultaneously. Our assembly staff are trained on your specific BOM, our WMS scan-verifies every finished kit before it enters sellable inventory, and our process handles any component count or assembly complexity from a 2-item bundle to a 20-component holiday gift set. You get professional kit production at variable per-unit cost — without the overhead of running your own assembly operation, hiring seasonal labor for Q4 spikes, or absorbing capacity gaps between projects.
Most brands need kits fulfilled across multiple channels: DTC orders ship to customer doorsteps, FBA shipments inbound to Amazon fulfillment centers, wholesale POs ship to retailer distribution centers, and corporate gifting orders ship to individual recipient addresses. Each channel has different prep requirements — UPC barcodes for retail, FNSKU labels for FBA, retail-ready packaging for wholesale, and personalized inserts for gifting.
3PLCity assembles your kits once and prepares them for every channel from the same inventory pool. A retail-bound kit gets UPC labeling and routing-guide-compliant packaging. An FBA-bound kit gets FNSKU labeling, polybagging, and suffocation warnings. A DTC kit gets your branded unboxing presentation. A gifting kit gets personalized inserts and individual recipient routing. One assembly run, one finished SKU, every channel covered — without rebuilding the kit for each destination.
A bill of materials lists every component that goes into each kit — product SKUs, quantities, packaging materials, inserts, polybags, labels, and assembly instructions. You provide the BOM, and we use it to train our assembly staff, configure our WMS kit specifications, and calculate component inventory requirements for each planned run. If you're not sure how to format a BOM, we provide a template during onboarding. We also assemble a sample kit for your approval before full production begins so you can verify the spec before committing to a run.
Yes. We create new sellable SKUs for every assembled kit, register them in your inventory system alongside the original component SKUs, and apply the appropriate barcode for the kit's destination — UPC for retail and DTC, FNSKU for Amazon FBA-bound kits with full prep requirements (polybagging, suffocation warnings, set-creation labels, box-level content labels), and custom internal SKUs for B2B or wholesale channels.
We update BOMs on request and run multiple kit versions simultaneously. Seasonal kits, monthly variations, A/B test versions, regional variants, holiday assortments, and limited-edition drops are all supported with no rebuild cost for spec updates between runs — only the labor and component cost of the actual assembly. For subscription programs, per-subscriber variant handling is built in: different tiers, preference-based personalization, and survey-driven product selection all run from one assembly cycle.
Yes. Component inventory is tracked separately from finished kit inventory in our WMS. You see both raw stock levels and built stock levels in real time. Multi-vendor coordination is part of every kitting run — products from five or more suppliers arriving across multiple weeks all stage cleanly for the same assembly cycle. Low-component alerts fire when raw inventory falls below the threshold needed for the next planned run, giving you time to replenish before assembly is blocked.
Standard kitting projects are configured in our WMS within 24 hours of receiving your BOM. Once components are received and verified, assembly can begin the same day. Complex projects with custom packaging, multi-vendor coordination, or specialized assembly steps may take 48-72 hours to set up. Cost is per-kit, scaling down with run volume — a 100-kit run costs more per unit than a 10,000-kit run because labor amortizes across volume. No setup fees, no rebuild fees for spec updates, and no per-SKU charges.
The full range — simple two-item product bundles, multi-component gift sets, subscription box assembly with per-subscriber variants, FBA virtual bundles with proper Amazon prep, corporate gifting kits with personalized inserts, PR seeding packages for influencer marketing, retail-ready value packs with routing-guide-compliant labeling, sample kits for trade shows and product launches, welcome boxes for new customers, and seasonal assortments for holiday programs. Any bill of materials, any complexity, from 100 units per run to 100,000+ per run.
