Folding electric bike dimensions are useful to a dealer only when the measurement describes a defined configuration. Record the unfolded bike, the folded bike and its shipping carton separately. For the folded measurement, specify the battery, pedals, handlebar, saddle and accessories left in place. Then check the actual sample against the storage opening and handling task your customers have in mind.
Short answer: Record 3 sets of dimensions: the unfolded bike, the folded bike and its shipping carton. For the folded size, note whether the battery, pedals, handlebar, saddle and accessories were left in place, then check the folded sample against the real space it must fit—a car boot, lift or storage opening.
Short answer: Record 3 separate sizes: unfolded bike, folded bike and shipping carton, each as length × width × height. To judge storage fit, use the folded measurement with its battery and accessory configuration, then check the opening and handling route. Carton dimensions and wheel size cannot substitute for a folded-bike measurement.
Which space must the folded bike fit?
For storage selection, compare the folded bike with the available opening and handling route. For freight planning, compare the packed carton. The Dolphin catalogue lists 132 × 21 × 65 cm as packaging dimensions; those measurements cannot answer whether the folded bike fits a customer’s cupboard or vehicle. Keep these two purchasing decisions separate.
Which dimensions describe the bike, and which describe its carton?
Unfolded dimensions describe the bicycle in a specified riding configuration. Folded dimensions describe its outer envelope after the documented folding procedure. Carton dimensions describe its packaging. These figures answer different questions and should occupy separate fields in a supplier specification.
A shipping carton may contain a partly disassembled bicycle with protective packing. Its dimensions cannot establish the size of a folded, ready-to-store bike. Likewise, a wheel-size label cannot tell a buyer how long, wide or tall the complete folded assembly will be.
Use three labelled fields in the same record: unfolded bike, folded bike and shipping carton. Put the preparation state beside each measurement, so a customer can distinguish normal folding from a packing arrangement that requires parts to be removed.
Which configuration should you measure?
The Dolphin photograph below shows an unfolded catalogue model. It helps identify the vehicle being discussed; it does not supply a measured folded size.
What the Dolphin catalogue figures describe
| Configuration | Listed bare weight | Listed package size |
|---|---|---|
| Dolphin no-shock version | 21 kg | 132 × 21 × 65 cm |
| Dolphin double-shock version | 23 kg | 132 × 21 × 65 cm |
Source: BG EBIKE Dolphin product page linked above; catalogue printed pages 47 and 50. The listed weights are bare weights, not shipping gross weights or verified carrying weights with a selected battery. The shared package size does not establish identical folded dimensions.
Start with the exact model and version, then record how the sample is prepared. Is the battery installed? Are the pedals folded or removed? Is the handlebar lowered or folded? Is the saddle lowered? Are the rear cushion, carrier and any other supplied accessories still fitted? A compact measurement achieved by removing components describes a different preparation task from folding alone.
Use a consistent length × width × height order and write the unit beside the values. Define the orientation in a photograph or sketch so that another person can repeat the measurement. Record the furthest protruding parts rather than measuring only the frame or the distance between the tyres.
The Dolphin folded reference below illustrates why the complete arrangement matters: the handlebar, seat, cables and wheels occupy space around the folded frame. Use a measurement record for the quoted configuration to establish its length, width and height.
What belongs in a sample measurement record?
Ask for one record per quoted configuration. The following table is a reusable request template; it contains no assumed dimensions or weights.
| Record field | What the supplier or sample inspector should enter |
|---|---|
| Model and version | Model reference, battery version and fitted accessories; sample identifier and measurement date. |
| Unfolded size | Length × width × height, unit, and handlebar/saddle position used. |
| Folded size | Length × width × height and the defined orientation; include all protruding parts in that state. |
| Preparation state | Battery installed or removed; pedals, handlebar, saddle and accessories folded, adjusted, fitted or removed. |
| Handling weight | Measured weight with the listed equipment; separately record any removed battery or accessory weight. |
| Handling method | Approved lifting points, any folded retention device and whether the supplier permits rolling in that state. |
| Storage fit check | Available internal space, opening dimensions, obstacles and result of the intended sample placement. |
| Separate packing record | Carton dimensions, gross weight and packing/disassembly state, kept outside the folded-bike measurements. |
Request photographs from enough directions to show the measurement endpoints and preparation state. Keep the record with the quotation and sample version. If the supplied configuration changes, revisit the affected measurements before reusing them in customer-facing specifications.
Will the bike pass through the storage opening?
A folded bicycle can be smaller than a storage compartment in three stated dimensions and still be awkward to place inside it. The entrance may be narrower than the interior, and a sill, shelf or hinge may restrict the angle of entry. A calculated volume does not demonstrate a practical fit.
For a dealer evaluating a cupboard, display area or customer vehicle, record both the opening and the usable interior. Then try the sample through the intended route, keeping the approved orientation and handling method. Note what must be removed, where the person can grip the bike and whether the stored position is stable under the supplier’s instructions.
Do not turn one successful placement into a claim that the model fits every car boot or storage locker. Describe the tested space and bike configuration. If no representative space is available, describe the result as a dimensional assessment rather than a completed fit test.
Does a smaller folded bike weigh less?
Folding changes the shape of the assembled bike; it does not reduce its mass unless parts are removed. A compact folded size therefore does not establish that a bike is easy for a particular person to lift.
Compare weights on the same basis. A bare-bike figure should not be presented as a complete-bike weight with battery and accessories. If a removable battery is part of the planned handling routine, record the remaining bicycle weight and battery weight separately, along with the approved removal procedure.
During sample evaluation, assess the actual lifting task and available grip points. Do not infer that a saddle, cable, carrier or folded handlebar is an approved lifting point from its appearance. Use the model instructions to evaluate the fold, retention and unfolding checks; this article does not replace those instructions.
Confirm the specification on a sample before committing a container; where a component or accessory needs to change, see what is possible through customization.
Frequently asked questions
How should dimensions be shown in inches and centimetres?
Keep one original measurement record and convert from it consistently. State the unit beside every set of dimensions and preserve the same length, width and height order. Avoid presenting converted figures with more precision than the sample measurement supports. When a customer compares those numbers with a storage opening, use the same unit on both sides and allow for the actual handling path rather than treating a rounded conversion as clearance.
Can the same folded-size record cover an accessory change?
Only if the changed accessory leaves the measured envelope and preparation state unchanged. A different basket, rear platform or pedal arrangement can require a revised record even when the frame is the same. Identify the affected version, repeat the relevant measurements and keep the earlier record linked to its original configuration. This prevents a photograph of one version from being paired with the dimensions of another.
What should a dealer do if two sample measurements disagree?
Reconcile the measurement method before choosing either figure for a listing. Check model version, fitted parts, fold position, orientation, units and the endpoints used by each person. Repeat the measurement with those conditions matched and photograph the endpoints. Keep the agreed record with the sample identifier and date; do not average two measurements that describe different configurations or different definitions of width.
Request model-specific dimensions from BG EBIKE
Send the folding model you are considering, destination market and estimated order quantity. Describe the intended storage or handling requirement, including the available opening and interior space if relevant. Specify which battery and accessories you want included in the measurement.
Review the Dolphin configuration page and Z6 folding model. Use the packing and container-loading guide for carton volume; use a folded-vehicle measurement record for storage fit.
Include the folded measurement record above so that the discussion addresses the actual version and use case.
