LS2 FF901 Advant X Liner Carbon
02 · Data & docs

The facts.

Technical data
Partcomplete replacement interior — crown liner and cheek pads
FabricX-Static© silver antibacterial
Foamlaser-cut, varying density
Propertieshypoallergenic, breathable, removable, washable
SizesXS to 3XL
Part number801901LNR01
DescriptionThe whole story▼

Genuine LS2 replacement interior for the FF901 Advant X carbon models, part 801901LNR01, available in every helmet size from XS to 3XL. The set carries the same specification as the original: X-Static© silver antibacterial fabric, laser-cut foam, hypoallergenic, breathable, removable and machine-washable.

This is the part that decides how long the helmet lasts you, and it is the part riders most often misdiagnose. Liner foam compresses under load and breaks down chemically from sweat and hair oils. As it does, the fit loosens: the helmet begins to move on the head, rocks under braking, and lets in noise that was not there before. The natural conclusion is that the helmet is finished. In fact the shell is untouched and the interior has simply reached the end of its service life — at a fraction of the cost of a new helmet.

The X-Static treatment is worth understanding. Pure silver is bonded to the fibre surface rather than applied as a coating, and silver is antimicrobial by nature, so the property survives washing instead of rinsing out after a few cycles. The foam behind it is laser-cut, which lets the density and profile vary within a single pad rather than being uniformly stamped — firm where the pad locates the helmet on your jaw, relieved over the cheekbone and where glasses arms run.

🔑 Order the size that matches your helmet, not your head. And if the helmet is otherwise the right size but feels marginally loose at the cheeks, the cheek pads (part 806901CKP03) are the cheaper first step.

Fits

  • LS2 FF901 Advant X Carbon

Specification

  • Part — complete replacement interior — crown liner and cheek pads
  • Fabric — X-Static© silver antibacterial
  • Foam — laser-cut, varying density
  • Properties — hypoallergenic, breathable, removable, washable
  • Sizes — XS to 3XL
  • Part number — 801901LNR01
FitmentBy head size — not by bike▼
06 · Complete the look

Head to toe.

Auto-matched to this helmet's sector — Racing
Head to toeAuto-filled from the Racing sector
01HEADDone — the reason you’re here
LS2 FF901 Advant X Liner Carbon
Rs7,400.00On your head
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07 · Support

Questions, one topic at a time.

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