The facts.
DescriptionThe whole story▼
Dust gets treated as a place: gravel roads, deserts, building sites. On the roads a Monkey 125 actually travels, it is better understood as a season. Late summer on a country lane, with machinery working the fields on either side, puts more suspended particulate into the air than most unsealed tracks do — and it does it at the exact height a small motorcycle breathes. That is the case for a finer medium on a bike that will never see a desert.
Key Features
- Dry nonwoven media rated 14 µm at 1,800 l/m²/sec
- Depth-loading structure rather than a calibrated weave — it holds particles within the material
- Never oiled, so nothing thins in the wet or travels downstream
- Fits the standard Monkey airbox with nothing cut and nothing remapped
- Regenerated with compressed air instead of replaced each service
- Built to outlast the service schedule, with two years' warranty from purchase
A season, not a place
Harvest air is the version of dust that road riders meet without going looking for it. It is fine, it hangs, and it arrives over weeks rather than in a single memorable ride. That is what makes it easy to ignore: there is no moment when you think, that was dirty. A 14-micron medium answers precisely this kind of loading, and the PM179P14 does it in the standard airbox, so nothing about the machine changes except what reaches the engine.
The half of the trade you pay
Finer means more retention and less flow. That is a trade, not a ranking — 1,800 l/m²/sec against the 5,050 of the P08 is a real reduction, and any description that presents the finer medium as simply better is misleading you. What makes it defensible here is the machine: a 125 with a modest state of tune has flow in hand that it was never going to spend. It also will not make a standard Monkey quicker — nothing dropped into a standard airbox does. If your riding is clean tarmac and nothing else, the P08 is the more honest choice.
Care and cleaning
Compressed air from the clean side outwards is the routine service for the PM179P14. Where the loading is oily rather than dry, wash it in lukewarm water with a mild detergent and rinse until the water runs clear. It dries in open air, never with heat or flame, and it goes back in dry and untreated. A depth-loading medium repays being cleaned before it looks dramatic. The maintenance sheet sits in the Downloads tab.
Fitment & Compatibility
The P14 element for the Honda Monkey 125 built from 2018 to 2021 — frame code JB02, four gears, airbox cover 17235-K0F-T00. The same fitment is also offered as a P08 and as a P08 F1-85; the housing is identical and only the medium differs. What rules out the later bike is the housing itself: the PM179 family carries a deeper filtering pack than the Honda part, and the cover Honda introduced with the 2022 five-speed model (17235-K0F-T60) will not shut over it.
Owners of a Monkey from 2022 on (JB03 / JB05) should order SM302 instead, which follows the original element's dimensions. Because Honda kept the filter number 17210-K0F-T00 across both generations, that number cannot tell them apart — the gearbox, frame code or airbox cover can.
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- Honda Monkey 125 (2018–2021)
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