Sprint Filter PM145S air filter
02 · Data & docs

The facts.

DescriptionThe whole story▼

An injected single is very good at concealing a dirty air filter. The lambda sensor reports a mixture that has drifted rich, the engine management trims the injection to bring it back, and the rider is handed a bike that feels precisely as it did last month. Nothing steps, nothing stumbles, nothing lights up. That is a comfortable arrangement right until you notice that the filter has no symptom to wait for. The Sprint Filter P08 is the answer to a part you cannot diagnose by riding it.

Key Features

  • Dry polyester medium — no oil to be drawn onto the sensors that do the compensating
  • 80 µm filtration at 5,050 l/m²/sec, the road-and-track setting of the Sprint Filter range
  • Roughly twice the working area of a typical performance filter, inside the standard box
  • Direct replacement: original airbox, original fixings, no remap called for
  • At 100 microns it stops 93.13 % of what arrives; oiled cotton gauze stops 76.42 %
  • Inspected, cleaned and refitted as often as you like, at no cost per inspection

Nothing to feel, which is the problem

Closed-loop fuelling is a compensation system, and compensation is exactly what hides gradual change. A restriction that builds over ten thousand kilometres never presents itself as a fault; it presents itself as normal, because the map keeps adjusting to it and your memory adjusts alongside. By the time anything is genuinely noticeable, the element has been past its useful state for a long while. None of that is a defect — it is simply what a well-behaved engine management system does.

Inspection has to cost nothing

If a part cannot be judged by how the bike feels, it has to be judged by looking, and looking only happens when it is free. With a paper panel it never quite is: the inspection carries a purchase decision at the end of it, and a panel that has already been unbolted and doubted is an awkward thing to put back. A washable element removes the decision. Clean it, refit it, and the question is answered instead of postponed. It adds no power to a standard RC 200 — no drop-in element does — but it makes the intake something you can actually verify.

Care and cleaning

Compressed air from the clean side, directed outward, is the whole procedure most of the time. When the element has taken on more than that will move, wash it in hand-warm water with a mild detergent, rinse until nothing further comes out of it, and let it dry fully in circulating air. Heat of any kind is out, and so is refitting it before it is dry. The illustrated procedure for the PM145S is filed under Downloads.

Fitment & Compatibility

The P08 for the KTM RC 200, model years 2014 to 2018. It is one of nine machines in KTM's small-capacity family sharing this airbox and this element code, so quote the code and the year rather than the model name on its own.

DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
  • KTM Duke 125 (2011–2016)
  • KTM RC 125 (2014–2019)
  • KTM Duke 200 (2012–2019)
  • KTM RC 200 (2014–2018)
  • KTM Duke 250 (2015–2016)
  • KTM RC 250 (2015–2017)
  • KTM Duke 390 (2013–2016)
  • KTM RC 390 (2014–2018)
  • KTM RC 390R (2018–2021)
07 · Support

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08 · Paddock

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