Flywheel for BMW 3 Series: Neoprene
This flywheel for the BMW 3 Series is specified around neoprene, 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 inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Flywheel |
|---|---|
| Vehicle application | BMW 3 Series |
| Material / finish | Neoprene |
| Typical use | Ride-Hailing Fleets |
| MOQ | 500 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 20-40 days after approval |
| Compliance | ECE R90 |
| Packing | 50 pieces per inner box, 200 per carton |
Material options
- Tempered Glass — the cost-effective default for volume programmes
- Neoprene — specified where the part sits close to a heat source
- Titanium Alloy — chosen where wear resistance comes first
- Cast Iron — selected when the part is exposed to weather and road salt
- Stainless Steel — selected when the part is exposed to weather and road salt

Processes available
- cold forging
- surface grinding
- rubber vulcanisation
- die casting
- powder coating
- anodising
Fitment notes
Confirm the fitment against the VIN or the frame number before ordering; two model years often share a name and not a part.
Where it is used
The specification above is the one most often ordered for ride-hailing fleets. Related applications include ride-hailing fleets, roadside assistance, passenger transport, track days, motocross.
Quality and packing
- In-line inspection with AQL 1.5 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
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ECE R90-compliant build instead of a fresh interpretation.
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.
What testing is included?
Standard lots ship with dimensional and hardness reports. ECE R90 documentation is issued with the shipment when your market requires it.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







