The facts.
DescriptionThe whole story▼
A woven element can be read by eye. Hold a P08 up to the light and its state is visible in what comes through. The T12 is not a weave but a mat of polyester fibres, and it works through its depth rather than at a face: what it has arrested lies distributed inside the material instead of on the outside. That structure is why it can hold particles down to 7 microns without becoming a sheet of packed dirt. It is also why, once a PM155T12 is in the airbox of an 890 Adventure, looking at the thing stops telling you very much.
Key Features
- Polyester nonwoven, dry in service: 7 µm of filtration at 560 l/m²/sec
- A ninth of the standard P08's rated passage, which flows 5,050 l/m²/sec at 80 µm
- Depth filtration — the load is held within the mat, not caught on a single plane
- No filter oil at any stage: nothing to dose, nothing able to travel downstream
- Direct replacement inside the untouched airbox: no fabrication, no remap
- Blown through and refitted indefinitely, under two years of warranty from purchase
Why the fineness lives in the structure
A weave arrests at its openings, so what it catches gathers on one plane and that plane is what fills. A nonwoven presents layer after layer of fibre in the direction of flow, and the load distributes itself through that thickness. It is the only practical way to reach 7 microns on a motorcycle: apertures that fine in a woven cloth would amount to a wall. The consequence is that the element gives no useful visual signal. Holding it against a lamp says nothing about how much of its depth is already occupied.
Servicing by conditions instead of by appearance
So the routine changes. Instead of opening the airbox to see whether the element needs attention, you clean it after conditions that would have loaded it: a day on dry unsealed roads, a stage behind other vehicles, a dusty section with the bike laden. Since compressed air is the entire procedure and the element is not consumed by cleaning, doing it too often costs nothing. That habit is also the only benefit worth promising. An 890 Adventure with a new element in a standard airbox is not a faster motorcycle — nothing that drops into the original box is — it is one whose intake resistance starts below a paper panel's and can be put back there, bought at roughly a ninth of the P08's rated flow on dusty rides and clean ones alike.
Care and cleaning
The medium is dry, so it can come out and go back in the same afternoon. Direct compressed air at the clean face and work outward until the dust stops coming. Where more has settled in than air will shift, wash it in lukewarm water with mild detergent and rinse clear. Air and time do the drying, never heat, and it is refitted dry. The maintenance sheet sits in the Downloads tab.
Fitment & Compatibility
Made for the KTM 890 Adventure, Adventure L and Adventure R from 2021 to 2026. Six machines share this code: the 890 and the 890 Adventure R Rally, the 790 Adventure, the 1090 Adventure, the 1290 Super Adventure and the Husqvarna Norden 901. The Fitment tab names each with its years.
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- Husqvarna Norden 901 (2022–2026)
- KTM Adventure / L / R 790 (2019–2026)
- KTM Adventure / L / R 890 (2021–2026)
- KTM Adventure R Rally (2021–2026)
- KTM Adventure/R (2016–2019)
- KTM Super Adventure R/S (2015–2026)
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