Piston for BYD F3: Reinforced Nylon
This piston for the BYD F3 is specified around reinforced nylon, 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 inconsistent hardness between lots, or lead time that slipped twice before bulk started. Both are specification problems, and both are preventable.

Specification
| Product | Piston |
|---|---|
| Vehicle application | BYD F3 |
| Material / finish | Reinforced Nylon |
| Typical use | Security Patrols |
| MOQ | 200 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 20-30 days after approval |
| Compliance | DOT |
| Packing | 20 pieces per inner box, 200 per carton |
Material options
- Semi-Metallic Compound — used when the finish has to hold a coating
- ABS Plastic — specified where the part sits close to a heat source
- Sintered Metal — preferred when weight matters more than rigidity
- Carbon Fibre Composite — specified where the part sits close to a heat source
- Nylon 66 — chosen where wear resistance comes first

Processes available
- CNC machining
- robot welding
- sintering
- electroplating
- precision stamping
- rubber vulcanisation
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 security patrols. Related applications include urban courier work, adventure travel, construction sites, weekend riding, ride-hailing fleets.
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 200 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
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 DOT-compliant build instead of a fresh interpretation.
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.
Ask for the current catalogue and the specification sheet for this line.







