Torsion Bar for Audi A4: Carbon Fibre Composite
This torsion bar for the Audi A4 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 premature wear on the first batch, or a fitment that looked right on paper and failed on the bench. Both are specification problems, and both are preventable.
Specification
| Product | Torsion Bar |
|---|---|
| Vehicle application | Audi A4 |
| Material / finish | Carbon Fibre Composite |
| Typical use | Rural Transport |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | ISO 9001 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- Tempered Glass — the cost-effective default for volume programmes
- Sintered Metal — used when the finish has to hold a coating
- Chromed Steel — selected when the part is exposed to weather and road salt
- Carbon Steel — the cost-effective default for volume programmes
- Polypropylene — specified where the part sits close to a heat source
Processes available
- CNC machining
- rubber vulcanisation
- surface grinding
- powder coating
- precision stamping
- robot welding
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 rural transport. Related applications include rural transport, security patrols, night riding, airport ground fleets, farm use.
Quality and packing
- In-line inspection with AQL 2.5 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
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
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 long does sampling take?
Samples leave the factory in 7 working days, and each revision round adds about 3 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.
Send the part number, the annual volume and the target market, and we will come back with a specification and a sampling plan.
