A motorcycle crankshaft assembly wholesale request can stall when a buyer sends only a model name or a single photo. The supplier may still need to identify the engine version, the exact part form and the measurements that apply to that listing. Use this component-specific checklist before comparing quotations.
Key takeaways
- State whether you need a complete assembly, a crankshaft alone or a separate component.
- Send the make, model, year or market version, engine code and any readable part reference.
- Ask the supplier which dimensions and components apply to the exact SKU.
- Label every measurement with its unit and the points measured; do not infer a fit from appearance.
- Confirm MOQ, price basis, packed dimensions and shipping scope in writing.
Why is a model name alone not enough?
A model name is a useful starting point, but it may not identify the exact engine or market version. A quote for a complete assembly is not directly comparable with one for a crankshaft alone or a connecting-rod kit. Both parties should first confirm that they mean the same item and configuration.
Send the motorcycle make and model, year or market version if known, engine code, and any OEM or supplier reference printed on the old part. Treat a catalog application as a listed reference, not independent proof of fitment. Ask the supplier to confirm whether it matches your exact version. Use the crankshaft assemblies category to open a specific listing and include that SKU or URL in the RFQ; the category label alone does not confirm fitment.
What exactly should the quotation include?
Start by naming the part form. Ask whether the quotation covers a complete crankshaft assembly, a crankshaft only, a connecting-rod kit or another individual component. Request an itemized list of included parts and identify any bearing, gear, key, fastener or other component that is included only when stated.
Use one RFQ line per SKU and configuration. If a listing uses a vehicle reference, keep that reference beside the exact product name and ask the seller to confirm the version. If you are unsure what the listing shows, attach a clear photo of the old part and ask the supplier to identify what additional evidence it needs.
Which crankshaft details should the supplier confirm?
Ask which of these fields apply to the exact item, and request values or a drawing from the supplier. A field that is not provided should stay marked “not provided” until confirmed.
| Detail to confirm | How to make the answer usable |
|---|---|
| Assembly scope | List the included components and whether the quote is for a complete assembly or a single part |
| Overall shaft length | State the reference points used for the measurement |
| Journals and bearings | Request applicable journal diameters and bearing references for the selected configuration |
| Stroke or related geometry | Ask for the drawing or supplier-confirmed value where relevant to the exact SKU |
| Shaft ends | Confirm any relevant taper, keyway, spline, thread or other interface, with a marked photo or drawing |
| Material or surface treatment | Request these only against a defined specification or supplier document; do not infer them from a photo |
| Size and weight basis | Separate component dimensions/weight from inner packaging and outer-carton dimensions/gross weight |
This makes missing information visible before price comparison or freight planning. If a supplier cannot verify a requested detail, record it as pending rather than filling the gap with an assumption.
How should buyers send photos and measurements?
Send clear views of both sides, each shaft end, visible markings and the interfaces that matter to the selected listing. Keep the part orientation consistent across photos. If you add a ruler or caliper photo, label the measurement points and units; a number without its measurement location is hard to compare.
When a drawing or old sample is available, identify the drawing revision or label the sample so the supplier can refer to the same evidence in the quotation. Do not treat a photo or model name alone as confirmation of compatibility.
How can wholesale quotes be compared fairly?
Compare the same SKU, part form, configuration and quantity. Ask each supplier to state MOQ, unit-price basis, included components, quote validity and any proposed substitution. Keep product price separate from freight unless the quote clearly says otherwise. For freight planning, confirm whether dimensions and weight are packed figures, then provide the destination country or port.
For the general comparison sheet and RFQ fields used across different motorcycle parts, see the motorcycle-parts wholesale RFQ template. This guide focuses on the crankshaft-specific identification and measurement questions that should be added to that request.
What should be checked before approving a bulk order?
If you order a sample, compare it with the written specification and the photos or drawing used for approval. Check the item form, markings and included components against the accepted quotation. Resolve differences before approving the next quantity. Use the sample approval checklist for the broader approval sequence.
After shipment, record carton condition and item discrepancies against the same SKU. The separate crankcase receiving checklist covers receiving records; it does not replace fitment confirmation before an order.
Copy-and-send crankshaft RFQ template
We need a quotation for: [complete assembly / crankshaft only / connecting-rod kit / other]
Product listing or SKU: [ ]
Motorcycle make/model: [ ]. Year or market version: [ ]. Engine code: [ ].
OEM or supplier reference / markings: [ ].
Quantity by configuration: [ ]. Sample required: [yes/no].
Photos, drawing revision or measurement points attached: [ ].
Please confirm the exact item, listed application, included components and the applicable shaft, journal, bearing and interface details. Please mark any unknown field as not provided.
Please state MOQ, unit-price basis, packed dimensions and gross weight, lead time, quote validity and exclusions.
Destination country/port: [ ]. Quote freight separately if it is not included.
Frequently asked questions
Does a vehicle reference guarantee fitment?
No. It is a reference to check against the exact listing and engine version. Request written confirmation of the selected part and relevant interfaces before placing a bulk order.
Are dimensions shown in a listing always part dimensions?
Not necessarily. Ask whether the figures describe the component, inner packaging or outer carton. Confirm packed dimensions and gross weight separately for freight planning.
What if I do not know the measurements?
Send the exact SKU or listing, model and engine details, any readable part reference, and clear photos. Mark unknown values as unknown and ask the supplier what drawing or sample evidence is needed.
Request a written fitment and quotation review
Send the product reference, motorcycle and engine details, photos, quantity and destination through the motorcycle-parts sourcing contact page. Ask the supplier to confirm item identity, fitment basis, included components, MOQ, price scope and freight assumptions in writing before approving a sample or bulk order. Availability and final terms must be reconfirmed in the quotation.