Air Filter for QJMotor SRK 400: Quick Fit Version
This air filter is built for the QJMotor SRK 400 and supplied to a written specification, so the part that comes off the line in the next order matches the one you approved. Fitment, base material and finish are fixed before sampling starts — that is what keeps the quick fit version programme stable once it moves from first order to repeat order.
Most buyers come to us after something went wrong: lead time that slipped twice before bulk started, or a specification nobody had written down. Both are avoidable when the specification is written down before bulk and the approved sample is kept as the reference.
Specification
| Part | Air Filter |
|---|---|
| Fitment | QJMotor SRK 400 |
| Version | Quick Fit Version |
| Base material | Aluminium Alloy |
| Typical use | Motocross |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 30-60 days after approval |
| Compliance | DOT |
What decides whether it lasts
- Material — Aluminium Alloy is the base; treat any substitution as a new approval.
- Hardness and heat treatment — recorded per lot, not per batch of paperwork.
- Fitment tolerance — checked on the actual QJMotor SRK 400 mounting, not on a catalogue drawing.
- Finish — zinc plating holds up where the machine sees salt, mud and daily washing.
- Packing — individual packing plus inner cartons sized for the workshop bench.
Processes used on this line
- shot blasting
- precision stamping
- laser cutting
- electroplating
- heat treatment
- robot welding
Fitment notes
Check whether the mounting points on your market version match the catalogue drawing — regional variants are the usual cause of a wrong first order.
Where it is used
The quick fit version build is the one most often ordered for motocross. Riders also fit it for rural transport, urban courier work, ride-hailing fleets, delivery fleets.
Ordering
- Confirm the model year and frame number before ordering.
- Approve a sample made from the actual bulk material.
- Fix the packing and marking at quotation stage.
- Book inspection before the balance payment, not after it.
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 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 500 pieces per line.
What is the minimum order quantity?
The standard MOQ is 500 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.
Ask for the current catalogue and the specification sheet for this line.
