Crankshaft Assembly for Yamaha YBR125: Racing Spec
This crankshaft assembly 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 racing spec 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 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 | Crankshaft Assembly |
|---|---|
| Fitment | Yamaha YBR125 |
| Version | Racing Spec |
| Base material | Powder Coated Steel |
| Typical use | Track Days |
| MOQ | 200 pieces per specification |
| Sampling | 14 working days, 3 days per revision |
| Bulk lead time | 25-35 days after approval |
| Compliance | ISO 9001 |
What decides whether it lasts
- Material — Powder Coated Steel 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
- ultrasonic cleaning
- powder coating
- heat treatment
- laser cutting
- shot blasting
- electroplating
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 racing spec build is the one most often ordered for track days. Riders also fit it for wet weather riding, food delivery, construction sites, track days.
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
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the ISO 9001-compliant build instead of a fresh interpretation.
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.
Do you handle mixed containers?
Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 200 pieces per line.
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.
Ask for the current catalogue and the specification sheet for this line.
