A modular bike cargo system is more than a rack with optional accessories. It is a chain of bicycle-side mounts, connectors, cargo platforms, rails, fasteners, and load limits. For a distributor, bicycle brand, or fleet buyer, a useful quotation must show how those parts form one verified configuration.
This guide uses the LANSHUO CYKE range as a practical example. It explains how to create a bill of materials, separate complete kits from component builds, and identify the information a supplier needs before confirming a system.
Start With the System Architecture
A front cargo system usually has two sides. The bicycle side creates an approved interface on the frame or steering assembly. The cargo side carries the platform, basket, box, or rail set. A detachable connector may sit between them.
The CYKE Velzen Kit 2.0 Modular Front Bike Cargo System combines the main parts in one published configuration: a head-tube receiver, quick-release connector, T-slot front platform, and four cargo rails. LANSHUO lists model C6320, overall dimensions of 306 × 247.6 × 146 mm, a net weight of 2.5 kg, and a 13 kg complete-system load rating.
That complete-kit description is valuable because it fixes the component relationship. A buyer who wants a different platform or mount should move from “kit selection” to a component-level specification rather than assuming every part remains compatible.
Build a Component-Level Bill of Materials
The following map shows the published roles of the main front-system components.
| System layer | LANSHUO example | Published role | Key procurement question |
|---|---|---|---|
| Bicycle-side receiver | VelzenCrux C6301 | Creates a head-tube-mounted front interface | Does the bicycle have a compatible round metal head tube and clear strap contact area? |
| Detachable connector | VelzenLock C6302 | Connects a compatible bicycle-side mount to a removable cargo module | Does the cargo-side bolt pattern and complete-system rating match? |
| Open platform | VelzenDeck LockSet C6319 | Provides a slotted T-slot deck and adjustable tie-down points | Is an open deck suitable for the cargo footprint and securing method? |
| Side rails | VelzenCage 2.0 C6313 | Adds four side panels to the compatible front platform | Does the buyer need lateral containment as well as straps or a net? |
| Complete system | Velzen Kit 2.0 C6320 | Packages receiver, connector, platform, rails, and hardware | Is the complete published configuration the intended one? |
This bill of materials should appear in the quotation or technical review. It prevents a buyer from receiving a compatible platform but the wrong receiver, connector, rail set, or fastener package.
Verify the Bicycle Side First
The bicycle-side mount controls the rest of the specification. The CYKE VelzenCrux Head-Tube-Mounted Front Cargo Receiver is published for compatible round aluminum or steel head tubes. Its four supplied straps can be combined for a measured installation range of 20–200 mm. LANSHUO excludes carbon-fiber, aerodynamic, and irregularly shaped head tubes, as well as applications where protrusions prevent correct strap contact.
The buyer should therefore send clear side and front photographs, the frame material, head-tube shape, usable mounting area, cable routing, and nearby welded parts. A single diameter does not describe an irregular frame section or an obstructed mounting surface.
Compact and folding bicycles need an additional envelope check. The cargo mount must not obstruct the folding mechanism, controls, cables, wheel, or normal storage configuration. That does not make a modular system unsuitable for folding bikes; it means the fold geometry belongs in the fit review.
Define the Connection Between Bicycle and Cargo
The CYKE VelzenLock Bike Cargo Quick-Release Connector forms the detachable interface in this product family. Its published cargo-side pattern is 60 × 58 mm with four holes. The connector is rated to 15 kg, but the product page states that the complete-system limit is governed by the lowest-rated component. When paired with the C6319 platform, LANSHUO lists the complete system at 13 kg.
The word “Lock” in a product name can cause a procurement error. LANSHUO explicitly states that the release latch is a retention mechanism and must not be represented as an anti-theft lock. Distributor copy, packaging, and training should preserve that distinction.
A B2B specification should also state which side of the connector remains on the bicycle, which side remains on the cargo module, and whether extra cargo-side connectors are required for a multi-module fleet. Do not promise a module-swap workflow unless the exact components and instructions support it.
Select the Cargo-Side Format
The CYKE VelzenDeck LockSet Quick-Release Front Cargo Platform is an open 300 × 217.6 × 21.5 mm aluminum platform with T-slot channels and four adjustable M5 eyelets. LANSHUO lists a 13 kg complete-system rating and a net weight of 1.7 kg for the platform and mounting assembly.
An open platform suits cargo that has a stable base and a defined tie-down plan. A crate, case, or bag can use the deck area differently, so the buyer should provide both the footprint and the securing method.
The C6313 rail set adds two left and two right aluminum panels around the compatible platform. Each panel is listed at 127 × 77 × 120 mm, and the set weighs 0.4 kg. The rails provide attachment openings for straps, nets, and bungee cords, but the product page states that they do not increase the platform or complete-system load rating.
This separation is useful for product planning. A distributor can quote an open-deck configuration for secured cases and a rail-equipped configuration for smaller mixed cargo, while keeping both within the approved system architecture.
Treat Load Rating as a System Property
A common catalogue mistake is to quote the highest rating visible on any one component. A modular system should instead follow its lowest-rated component and the bicycle manufacturer’s applicable limit.
For example:
- VelzenCrux receiver: published 15 kg receiver rating.
- VelzenLock connector: published 15 kg connector rating.
- VelzenDeck LockSet complete configuration: published 13 kg complete-system rating.
- Velzen Kit 2.0: published 13 kg complete-system rating.
- VelzenCage rails: no increase to the underlying system rating.
These values describe the current LANSHUO product pages. They should not be transferred to an unverified combination or another bicycle.
The cargo mass, accessory mass, and module mass must be considered together where the current instructions require it. The quotation should name the governing limit instead of presenting a list of component ratings without a conclusion.
Design the SKU and Service Strategy
For an importer or OEM buyer, modularity creates commercial questions beyond first installation.
Complete kit or separate components
A complete kit simplifies the initial bill of materials and reduces compatibility choices. Separate components are useful when the bicycle already has a suitable interface or when a fleet needs spare connectors, replacement rails, or more than one cargo module per bicycle.
Replacement parts
The buyer should identify replaceable rails, fasteners, spacers, and connector halves. A spare-parts list should use exact model numbers and revisions. “Fits the cargo rack” is not specific enough for after-sales support.
Packaging and assembly level
Confirm whether the platform, mounting plate, and cargo-side connector arrive assembled, which tools are required, and which instructions accompany each SKU. LANSHUO states that the C6319 platform, mounting plate, and cargo-side quick-release component are supplied preassembled.
Market documentation
US, UK, Canadian, and EU distributors may need different languages, units, warnings, and product-identification formats. These requirements should be scoped before packaging artwork is finalized. No certification should be claimed unless current supporting documentation is available for the exact product and market.
Use the Three LANSHUO Bicycle Ranges Correctly
The Bicycle Cargo Systems & Accessories collection is the primary range for the CYKE modular system. Buyers creating a wider catalogue can review Bicycle Components & Accessories for adjacent bicycle products. Projects centered on compact or folding bicycles should also review Folding Bike Frames & Accessories while keeping each product’s compatibility requirements separate.
Collection membership is a navigation aid, not proof that any two products connect mechanically. The approved bill of materials must come from the exact product documentation.
Supplier RFQ Checklist
Send the following information with a request for quotation:
- Target bicycle brand, model, year, frame material, and photographs.
- Head-tube shape and measurements, mounting obstructions, and cable routing.
- Required cargo footprint, mass, height, and securing method.
- Open platform, rail-equipped platform, or another module requirement.
- Whether quick removal or multiple interchangeable modules are needed.
- Complete-kit quantity and spare-component quantities.
- Destination countries, packaging language, labeling, and delivery schedule.
- Required inspection documents or test evidence for the exact configuration.
This information lets the supplier respond with a specific component map instead of a generic rack quotation.
FAQ
What makes a bike cargo system modular?
In this context, separate receiver, connector, platform, and rail components form a defined system. Modularity does not mean that unrelated brands or dimensions are automatically interchangeable.
Can the side rails increase the load rating?
No. The C6313 product page states that the rails do not increase the compatible platform or complete-system load rating.
Is the quick-release connector an anti-theft lock?
No. LANSHUO describes the VelzenLock latch as a retention mechanism, not an anti-theft lock.
Should a buyer order the complete kit or individual parts?
Choose the complete kit when its published configuration matches the bicycle and cargo requirement. Use a component build only when every interface, fastener set, and limit has been confirmed.
Specify the Complete Configuration
A useful modular-bike-cargo quotation names every load-bearing interface from bicycle to cargo. It identifies what is included, what is optional, what can be replaced, and which limit governs the final build.
To request a configuration review, contact LANSHUO with the bicycle data, cargo dimensions and mass, desired modules, quantity, destination markets, and documentation requirements. The result should be a traceable bill of materials—not a collection of components that merely look compatible.
