The facts.
DescriptionThe whole story▼
A 310 cc single used in town spends most of its life at part throttle, between traffic lights, rarely asking its intake for much air. That is the condition in which a finer filter medium costs least. PM189P14 is a dry nonwoven rated at 14 µm and 1,800 l/m²/sec, far less flow than the 5,050 of the woven P08, but an engine that never calls for the difference never pays for it. What the mat does collect is the fine dust of dense traffic, building sites and unpaved shoulders, which is the air an RTR 310 in the city actually breathes.
Key Features
- Dry special nonwoven, rated at 14 µm
- 1,800 l/m²/sec of rated flow, the trade for finer retention
- Holds fine dust in the depth of the mat
- Dry on delivery and after every cleaning; there is no oil to manage
- Fits the standard RTR 310 airbox, nothing cut and nothing remapped
- Roughly twice the area of a conventional element, two years of warranty
A trade that is nearly free here
Every step to a finer medium is paid in flow, and the payment only falls due when the engine needs the air. On short urban trips that moment barely comes. The price makes the choice cleaner still: in this housing the P14 costs almost exactly what the standard woven element costs, so neither budget nor flow argues against it on a city bike. The decision rests on the air alone, and in many cities that air carries a steady fine load all year. That load rarely looks dramatic. It does not cake the panel like mud from a farm track; it settles as a grey film through the depth of the mat, and it is exactly the fraction a coarser weave lets through to the cylinder.
When the P08 is better
Long stretches at high revs change the picture. An RTR 310 used for sustained highway runs or track days spends real time where intake flow matters, and the finer mat also loads sooner, shortening the interval. For that use the woven P08 is the right element. Neither medium makes a standard RTR 310 noticeably stronger, because a drop-in filter does not add power to a series engine. The P14 keeps more fine dust out; the P08 keeps more flow in reserve.
Care and cleaning
Compressed air on the clean side of PM189P14, worked outwards, is the routine; in city use it is worth doing more often than the manual's interval suggests. Lukewarm water with a mild detergent handles what air will not, rinsed until the run-off is clear. Dry the mat in moving air at room temperature only, never with heat, and refit it dry. The maintenance sheet is in the Downloads tab.
Fitment & Compatibility
Made for the TVS RTR 310 of 2023–2026 and seated in the series airbox without modification. This P14 is listed for three machines: the RTR 310, the Apache RR310 of 2018–2026 and the BMW G 310 R of 2017–2026. The G 310 GS is not on this list. Confirm your year in the Fitment tab.
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- BMW G 310 R (2017–2026)
- TVS Apache RR310 (2018–2026)
- TVS RTR 310 (2023–2026)
- BMW G310R (2017–2026) · own page →
- TVS Apache RR310 (2018–2026) · own page →
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