Downpipe for Changan CS75: Neoprene
This downpipe for the Changan CS75 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 reorders that did not match the approved sample, or inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Downpipe |
|---|---|
| Vehicle application | Changan CS75 |
| Material / finish | Neoprene |
| Typical use | Motocross |
| MOQ | 3,000 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | SAE J431 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- High Density Foam — selected when the part is exposed to weather and road salt
- Anodised Aluminium — preferred when weight matters more than rigidity
- Magnesium Alloy — chosen where wear resistance comes first
- Neoprene — specified where the part sits close to a heat source
- Ceramic Composite — chosen where wear resistance comes first

Processes available
- electroplating
- surface grinding
- precision stamping
- anodising
- powder coating
- cold forging
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 motocross. Related applications include security patrols, ride-hailing fleets, mining sites, coastal delivery, daily commuting.
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
What happens if a lot fails inspection?
The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.
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 SAE J431-compliant build instead of a fresh interpretation.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.







