Piston Ring Set for BMW G 310 R: Sealed Unit
This piston ring set is built for the BMW G 310 R 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 sealed unit 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 premature wear on the first batch. Both are avoidable when the specification is written down before bulk and the approved sample is kept as the reference.
Specification
| Part | Piston Ring Set |
|---|---|
| Fitment | BMW G 310 R |
| Version | Sealed Unit |
| Base material | Cast Iron |
| Typical use | Long-Distance Touring |
| MOQ | 3,000 pieces per specification |
| Sampling | 7 working days, 3 days per revision |
| Bulk lead time | 30-35 days after approval |
| Compliance | TUV |
What decides whether it lasts
- Material — Cast Iron 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 BMW G 310 R mounting, not on a catalogue drawing.
- Finish — anodising 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
- laser cutting
- injection moulding
- assembly line testing
- robot welding
- ultrasonic cleaning
- 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 sealed unit build is the one most often ordered for long-distance touring. Riders also fit it for ride-hailing fleets, passenger transport, weekend riding, urban courier work.
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. TUV documentation is issued with the shipment when your market requires it.
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 7 working days, and each revision round adds about 3 days once you have seen the first piece.
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.
Tell us the model, the fitment and the quantity and we will hold a production slot for you.
