Quick answer: a wholesale transmission RFQ must distinguish a gear-and-shaft assembly from a shift spindle and identify the exact engine or transmission variant. A shared model label is only a clue; buyers should match the old part, drawings and critical dimensions before approving quantity.
The current catalog includes a C100 / DY100 main-and-countershaft gear assembly, a C90 / Wave 125 transmission shaft-and-gear assembly, and a separate CB125 / CB150 / CB200 gear-shift spindle assembly. Because the third item is a different component type, it should not be quoted as though it were part of either gear assembly. The checks below help distributors keep the right part, configuration and quote together.
Is the request for gears, shafts or the shift mechanism?
Begin by translating the workshop’s wording into a precise line item. “Transmission gear” may refer to one loose gear, a main-shaft group, a countershaft group or a matched assembly. “Gear selector shaft” may mean the shift spindle that moves the mechanism. Write the part type and assembly scope beside the buyer SKU before requesting offers.
- The C100 / DY100 main-and-countershaft gear assembly is listed as a matched transmission group.
- The C90 / Wave 125 shaft-and-gear assembly is a separate listing with different model references.
- The CB125 / CB150 / CB200 gear-shift spindle assembly is a selector component, not a substitute for the main and countershaft gear group.
Ask the supplier to list every included shaft and gear, the number of pieces, any retaining clips or washers, and whether the quote is for one side or a matched set. The phrase “complete set” should always be followed by a parts list.
How do you confirm the exact engine and transmission version?
Record the motorcycle make, model, production year if known, engine code, market and transmission configuration. Photograph the engine number and any marks on the old shaft or gears. If the gearbox has already been opened, photograph the assembled layout before parts are separated. Similar model names can cover different revisions, so do not decide compatibility from the displacement alone.
For the C100 / DY100 and C90 / Wave 125 references, ask the supplier to identify which specific engine codes and production versions the listing is based on. Request a written fitment statement that names the buyer’s exact reference and identifies any exclusions. If no reliable code is available, use the old part, measurements and a sample comparison as the evidence.
Which gear and shaft details should be compared?
Ask for a drawing or measured sample covering the features that control assembly. Useful fields include overall shaft length, bearing-seat diameters, spline count and profile, shoulder positions, groove locations, gear count, tooth count for each gear, gear width and the relative order of the gears. Record any selector slot, engagement dogs or retaining feature that differs from the old part.
Do not infer ratios or interchangeability from a product photo. If the supplier uses a ratio table or tooth-count chart, ask them to identify the exact revision and match it to the buyer’s engine code. A complete set should arrive with its component list and the same orientation shown in the approved drawing or sample photos.
How should the shift spindle be specified?
Keep the shift spindle on its own quote line. Photograph the lever end, splines, return mechanism, stop surfaces and the portion that engages the selector. Ask for the shaft’s overall length, spline details, bend or offset, spring arrangement and any included hardware. The listed CB125 / CB150 / CB200 reference still needs confirmation against the buyer’s exact engine and original part.
If the buyer needs both a gear assembly and a spindle, request two SKUs and a separate line for each. Confirm whether either item requires a matching selector part or retaining component. This avoids receiving a correct-looking gear set while the requested selector component was never included in the order.
What does a useful sample review look like?
Compare the sample with the buyer’s original before approving production. Check each shaft end, bearing seat, spline, gear position and engagement surface against the drawing. Lay matched shafts side by side in the same orientation and photograph them with a scale. Count each gear and note any markings. Have a qualified mechanic verify fit and engagement on the intended model before a large order.
Record the sample identifier, supplier revision, buyer SKU, inspection date and approval result. If a gear tooth count, shaft length or gear order differs from the reference, stop and request a corrected sample or an explicit engineering sign-off. Do not accept a verbal assurance as a substitute for a written change record.
How should distributors compare quotes?
Compare the same configuration and set contents. Ask for MOQ per SKU, sample availability, quantity price breaks, production lead time, quote validity, packaging and shipping-carton information. Separate the cost of a matched shaft-and-gear assembly from a single gear or spindle. If a supplier quotes an alternative, mark it as a separate option with its own drawing, price and fitment basis.
Record whether gears are packed in matched sets or separately protected. Ask how the supplier labels left/right or input/output orientation and whether the carton contains a parts list. Request gross weight and carton dimensions only when needed for the freight quotation; do not treat a component measurement as a carton measurement.
Transmission RFQ worksheet
| Field | Buyer or supplier evidence |
|---|---|
| Part scope | Main shaft, countershaft, matched gear group, single gear or shift spindle. |
| Application | Make, model, year, engine code, market and original part reference. |
| Geometry | Supplier drawing for shaft length, seats, splines, gear positions and teeth. |
| Set contents | Piece count, included retainers, washers, clips and assembly orientation. |
| Approval | Sample ID, fitment basis, inspection result and written revision approval. |
| Commercials | MOQ, price breaks, lead time, packing and destination for freight estimate. |
Frequently asked questions
Are C90 and Wave 125 assemblies automatically interchangeable?
No. The catalog title records model references; it does not prove all years and variants share the same transmission. Confirm exact engine codes, part numbers and dimensions with the supplier.
Does a transmission assembly include the shift spindle?
Do not assume so. The current catalog has a separate gear-shift spindle listing. Ask for a written component list for each quote line.
Can a photo confirm the gear ratio?
A photo can help compare layout, but it may not show the tooth counts or revision. Request a dimensioned drawing or a supplier-verified tooth-count list tied to the exact engine reference.
Next step for wholesale buyers
Start with the motorcycle parts catalog and its transmission shafts & gears category, choose the assembly or spindle that matches the repair request, and send the engine code, old-part photos, requested quantity and destination through the wholesale RFQ form. Request the component list and dimensional evidence in writing, then approve the sample before releasing a bulk order.