Rack End for GMC Sierra: Magnesium Alloy
This rack end for the GMC Sierra is specified around magnesium alloy, 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 inconsistent hardness between lots. Both are specification problems, and both are preventable.

Specification
| Product | Rack End |
|---|---|
| Vehicle application | GMC Sierra |
| Material / finish | Magnesium Alloy |
| Typical use | Rural Transport |
| MOQ | 3,000 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 15-55 days after approval |
| Compliance | ISO/TS 16949 |
| Packing | 100 pieces per inner box, 200 per carton |
Material options
- ABS Plastic — selected when the part is exposed to weather and road salt
- Cast Iron — chosen where wear resistance comes first
- Sintered Metal — preferred when weight matters more than rigidity
- Semi-Metallic Compound — selected when the part is exposed to weather and road salt
- Stainless Steel — specified where the part sits close to a heat source

Processes available
- shot blasting
- injection moulding
- precision stamping
- ultrasonic cleaning
- powder coating
- surface grinding
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 rental fleets, adventure travel, passenger transport, urban courier work, coastal delivery.
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
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 3000 pieces per line.
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 3 days once you have seen the first piece.
What testing is included?
Standard lots ship with dimensional and hardness reports. ISO/TS 16949 documentation is issued with the shipment when your market requires it.
Share a sample or a drawing and we will quote against a written specification, not against a photograph.







