Coil Spring for Renault Duster: Carbon Fibre Composite
This coil spring for the Renault Duster is specified around carbon fibre composite, 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 lead time that slipped twice before bulk started, or a specification nobody had written down. Both are specification problems, and both are preventable.

Specification
| Product | Coil Spring |
|---|---|
| Vehicle application | Renault Duster |
| Material / finish | Carbon Fibre Composite |
| Typical use | Coastal Delivery |
| MOQ | 2,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 15-40 days after approval |
| Compliance | ECE R90 |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- Nylon 66 — specified where the part sits close to a heat source
- Magnesium Alloy — the cost-effective default for volume programmes
- ABS Plastic — preferred when weight matters more than rigidity
- Forged Aluminium — chosen where wear resistance comes first
- Silicone — used when the finish has to hold a coating

Processes available
- assembly line testing
- die casting
- anodising
- ultrasonic cleaning
- laser cutting
- injection moulding
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 coastal delivery. Related applications include farm use, rural transport, mining sites, passenger transport, urban courier work.
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
What is the minimum order quantity?
The standard MOQ is 2000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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 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.
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 specification you are working to and we will confirm what we can match, what we would change and why.







