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Motorcycle Racing Helmets Specification Example for Assembly Programmes: Adjustable Type

Source:Exhaust System Resonator / Time:2026-09-18

Motorcycle Racing Helmets Specification Example for Assembly Programmes: Adjustable Type

This is a worked specification for motorcycle racing helmets in a adjustable type 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 adjustable type version exists because the duty cycle on assembly programmes is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually a fitment that looked right on paper and failed on the bench.

Motorcycle Racing Helmets

Example specification

ItemMotorcycle Racing Helmets
ApplicationAssembly Programmes
VersionAdjustable Type
Base materialKevlar Composite
Controlled dimensions5 key dimensions, recorded per lot
Tolerance band±0.05 mm
Finishanodised
MOQ1,000 pieces per specification
Sampling14 working days, 5 days per revision
ComplianceISO/TS 16949

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Kevlar Composite, 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.

Motorcycle Racing Helmets example

Processes involved

  • sintering
  • rubber vulcanisation
  • surface grinding
  • heat treatment
  • die casting
  • powder coating

Where this example applies

Programmes that run adjustable type most often specify this build for assembly programmes. Related applications include trailer axles, agricultural trailers, racing teams, aftermarket retail, assembly programmes.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 4.0 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

What testing is included?

Standard lots ship with dimensional and hardness reports. ISO/TS 16949 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.

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.

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.

Ask for the current catalogue and the specification sheet for this line.

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