Sprint Filter P08 Air Filter for Road & Track – KTM 200 Duke (2012–2019) PM145S

The oldest idea in small-capacity tuning is that the airbox is in the way. On a 200 Duke it is a tempting one: the box is large, it is full of shapes that appear to serve no purpose, and a cone on the end of the intake looks like an obvious improvement. It is not plumbing, though. The volumes and the snorkel in there are part of how the engine makes its torque and part of how the machine passed its drive-by noise measurement. The Sprint Filter P08 works with all of that rather than around it.

Key Features

• Fits inside the original airbox — nothing removed, nothing rerouted, nothing to re-homologate
• Dry polyester weave, 80 µm and 5,050 l/m²/sec, used without oil of any kind
• Around double the filtering surface of a comparable performance element
• Even passage across the whole area: the medium is dimensionally stable and unaffected by pleating
• 93.13 % retention against the 76.42 % of a four-layer oiled cotton element
• Cleaned rather than replaced, for the working life of the machine, under two years of warranty

Why the box stays

Deleting an airbox changes three things at once and only one of them is airflow. Intake noise rises, which concerns anyone who has to present the bike for inspection. The pressure the injection system was calibrated against shifts, which the engine management will try to correct and will not entirely manage. And the intake stops drawing from the sheltered place the designers chose and starts drawing from wherever the cone happens to sit. Changing the element leaves all three exactly as they were.

What actually improves

Not the peak figure. A drop-in element does not make a standard 200 Duke noticeably quicker, and anyone who says otherwise is selling rather than explaining. What improves is the restriction the engine works against: lower to begin with, and still lower a year later, because the polyester is washed and put back instead of being gradually written off. That is the whole claim, and it is one the part keeps.

Care and cleaning

The dirt went in through the dirty face, so send it back out the same way: compressed air applied to the clean side and worked outwards. Where the element has taken on more than air will shift, water at hand temperature with a mild detergent will do it, followed by a rinse until nothing further comes away. Dry it in air, never with heat or a flame, and fit it dry. The PM145S maintenance sheet sits in the Downloads tab.

Fitment & Compatibility

The P08 for the KTM 200 Duke, 2012 to 2019 — the longest run of any machine on this element. Nine bikes in KTM's small-capacity range share it, so check the year alongside the model before ordering.