Brake Master Cylinder for Great Wall Poer: Nylon 66
This brake master cylinder for the Great Wall Poer is specified around nylon 66, 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 inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Brake Master Cylinder |
|---|---|
| Vehicle application | Great Wall Poer |
| Material / finish | Nylon 66 |
| Typical use | Ride-Hailing Fleets |
| MOQ | 1,000 pieces per specification |
| Sampling | 7 working days, 5 days per revision |
| Bulk lead time | 25-40 days after approval |
| Compliance | ISO 9001 |
| Packing | 50 pieces per inner box, 1000 per carton |
Material options
- Nylon 66 — chosen where wear resistance comes first
- PVC Coated Fabric — specified where the part sits close to a heat source
- High Density Foam — the cost-effective default for volume programmes
- Polypropylene — preferred when weight matters more than rigidity
- Carbon Fibre Composite — used when the finish has to hold a coating

Processes available
- electroplating
- anodising
- rubber vulcanisation
- die casting
- precision stamping
- injection moulding
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 ride-hailing fleets. Related applications include adventure travel, daily commuting, security patrols, rental fleets, night riding.
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
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 is the minimum order quantity?
The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ISO 9001-compliant build instead of a fresh interpretation.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.







