Spark Plug for Yamaha YBR125: Quick Fit Version
This spark plug is built for the Yamaha YBR125 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: premature wear on the first batch, or lead time that slipped twice before bulk started. Both are avoidable when the specification is written down before bulk and the approved sample is kept as the reference.

Specification
| Part | Spark Plug |
|---|---|
| Fitment | Yamaha YBR125 |
| Version | Quick Fit Version |
| Base material | Kevlar Composite |
| Typical use | Delivery Fleets |
| MOQ | 200 pieces per specification |
| Sampling | 14 working days, 5 days per revision |
| Bulk lead time | 30-60 days after approval |
| Compliance | SAE J431 |
What decides whether it lasts
- Material — Kevlar Composite 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 Yamaha YBR125 mounting, not on a catalogue drawing.
- Finish — powder coating 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
- heat treatment
- cold forging
- CNC machining
- precision stamping
- electroplating
- shot blasting
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 quick fit version build is the one most often ordered for delivery fleets. Riders also fit it for roadside assistance, passenger transport, construction sites, wet weather riding.
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 testing is included?
Standard lots ship with dimensional and hardness reports. SAE J431 documentation is issued with the shipment when your market requires it.
How long does sampling take?
Samples leave the factory in 14 working days, and each revision round adds about 5 days once you have seen the first piece.
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.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.







