Coil Spring for Mazda BT-50: Tempered Glass
This coil spring for the Mazda BT-50 is specified around tempered glass, 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 a fitment that looked right on paper and failed on the bench, or reorders that did not match the approved sample. Both are specification problems, and both are preventable.

Specification
| Product | Coil Spring |
|---|---|
| Vehicle application | Mazda BT-50 |
| Material / finish | Tempered Glass |
| Typical use | Off-Road Trails |
| MOQ | 1,000 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 15-30 days after approval |
| Compliance | ECE R90 |
| Packing | 20 pieces per inner box, 1000 per carton |
Material options
- EPDM Rubber — specified where the part sits close to a heat source
- Kevlar Composite — the cost-effective default for volume programmes
- Carbon Steel — selected when the part is exposed to weather and road salt
- Silicone — preferred when weight matters more than rigidity
- Chromed Steel — used when the finish has to hold a coating

Processes available
- die casting
- ultrasonic cleaning
- CNC machining
- anodising
- sintering
- 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 off-road trails. Related applications include coastal delivery, long-distance touring, farm use, night riding, mountain roads.
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 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 ECE R90-compliant build instead of a fresh interpretation.
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 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.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.







