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Sport Bumper Specification Example for Passenger Cars: Quick Fit Version

Source:Train Axle / Time:2026-09-18

Sport Bumper Specification Example for Passenger Cars: Quick Fit Version

This is a worked specification for sport bumper in a quick fit version programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The quick fit version version exists because the duty cycle on passenger cars is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually documentation that arrived after the container shipped.

Sport Bumper

Example specification

ItemSport Bumper
ApplicationPassenger Cars
VersionQuick Fit Version
Base materialNeoprene
Controlled dimensions4 key dimensions, recorded per lot
Tolerance band±0.05 mm
Finishas machined
MOQ1,000 pieces per specification
Sampling14 working days, 3 days per revision
ComplianceSAE J431

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Neoprene, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Sport Bumper example

Processes involved

  • CNC machining
  • sintering
  • robot welding
  • injection moulding
  • precision stamping
  • anodising

Where this example applies

Programmes that run quick fit version most often specify this build for passenger cars. Related applications include emergency vehicles, city buses, courier fleets, passenger cars, aftermarket retail.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 1.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

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 SAE J431-compliant build instead of a fresh interpretation.

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.

What is the minimum order quantity?

The standard MOQ is 1000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

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.

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