Rear Sprocket for Royal Enfield Classic 350: Racing Spec
This rear sprocket is built for the Royal Enfield Classic 350 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: inconsistent hardness between lots, 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 | Rear Sprocket |
|---|---|
| Fitment | Royal Enfield Classic 350 |
| Version | Racing Spec |
| Base material | Semi-Metallic Compound |
| Typical use | Passenger Transport |
| MOQ | 500 pieces per specification |
| Sampling | 10 working days, 3 days per revision |
| Bulk lead time | 25-60 days after approval |
| Compliance | E-mark |
What decides whether it lasts
- Material — Semi-Metallic Compound 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 Royal Enfield Classic 350 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
- robot welding
- shot blasting
- CNC machining
- rubber vulcanisation
- heat treatment
- cold forging
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 racing spec build is the one most often ordered for passenger transport. Riders also fit it for construction sites, track days, motocross, 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 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.
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.
How long does sampling take?
Samples leave the factory in 10 working days, and each revision round adds about 3 days once you have seen the first piece.
Can the specification be held on file?
Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the E-mark-compliant build instead of a fresh interpretation.
Ask for the current catalogue and the specification sheet for this line.
