Flywheel for Geely Coolray: Brass
This flywheel for the Geely Coolray is specified around brass, which decides how it behaves in service far more than the part name does. We build to a written specification — base material, dimensions, finish and packing — and hold that specification on file so every reorder reproduces the approved piece.
The usual reason a programme changes supplier is not unit price. It is warranty claims traced back to a single lot, or lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.

Specification
| Product | Flywheel |
|---|---|
| Vehicle application | Geely Coolray |
| Material / finish | Brass |
| Typical use | Adventure Travel |
| MOQ | 3,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 25-30 days after approval |
| Compliance | SAE J431 |
| Packing | 10 pieces per inner box, 200 per carton |
Material options
- Ceramic Composite — specified where the part sits close to a heat source
- Natural Rubber — used when the finish has to hold a coating
- Sintered Metal — used when the finish has to hold a coating
- Zinc Plated Steel — preferred when weight matters more than rigidity
- Powder Coated Steel — preferred when weight matters more than rigidity

Processes available
- shot blasting
- injection moulding
- rubber vulcanisation
- robot welding
- electroplating
- cold forging
Fitment notes
Keep the old part until the new one is on the bench. Comparing them side by side settles questions a photograph never will.
Where it is used
The specification above is the one most often ordered for adventure travel. Related applications include mountain roads, coastal delivery, rural transport, motocross, track days.
Quality and packing
- In-line inspection with AQL 4.0 sampling on every lot.
- Dimensional report issued against the approved drawing.
- Carton marking and barcode to your specification.
- Golden sample retained at the factory as the reorder reference.
Questions buyers ask
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 5 days once you have seen the first piece.
Can you match an existing sample?
Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.
How is packing specified?
Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







