Sprint Filter P08 F1-85 Air Filter for Racing – Suzuki GSX-S1000 (2022–2026) PM236S F1-85

The four in the GSX-S1000 comes down from the GSX-R1000 line, and it shows in where the engine wants to be used. This is the one machine on the platform that regularly reaches the revs at which an airbox stops being generous and starts being a component, which makes the case for a racing medium a real one. The Sprint Filter P08 F1-85 moves 15,000 litres per square metre per second where the standard P08 moves 5,050, and here there is something at the top of the rev range to spend it on. The condition that comes with it is not printed in the service book.

Key Features

• The racing weave of the P08 family: dry polyester, filtering at 85 microns
• 15,000 litres per square metre per second — the highest flow figure in the range
• Roughly twice the media area of other performance filters keeps the pressure drop small
• No oil anywhere in it, so nothing can be drawn onto the intake sensors
• Washed, dried and refitted instead of thrown away, over the life of the motorcycle
• Two years of warranty, counted from the purchase date

Why the demand here is genuine

Volume of air is displacement multiplied by revolutions, so a litre four turning hard is one of the few road engines that truly leans on its intake. The moments that matter are short and familiar: a slip road, an overtake, a few laps on an open day. Pressure drop across the element is at its worst exactly then, and one already carrying half a season of grit adds to it. On a smaller machine that argument stays theoretical, because the engine never asks for the air. Here it asks.

The condition attached to 85 microns

A racing medium is a maintenance regime as much as a part. Eighty-five microns against eighty is a wider opening, and the published retention figures — 95.22 per cent for the F1-85, 93.13 for the P08 — are measured on 100-micron particles and leave the fine fraction unanswered. What gets past does not stop at the intake; it ends up suspended in the oil, and the oil carries it to the bearings. Racing accepts this because racing measures engine life in hours at load and changes oil on that clock. On a road GSX-S1000 it means judging both the element and the oil by hours of hard use rather than by the trip meter, and opening the airbox more often than the book asks. Kept that way, the swap is defensible here. Not kept that way, the standard P08 is the honest answer — and for dusty routes the P14 at 14 microns and 1,800 litres per square metre per second sits at the other end of the same trade.

Care and cleaning

Compressed air does the routine work on the PM236S F1-85: hold the line to the clean side and push outwards until the weave is open. A wash in lukewarm water with a mild detergent is there for the rest, then left in moving air until it is completely dry — never over heat, never near a flame. Refit it dry. The maintenance sheet is in the Downloads tab.

Fitment & Compatibility

For the Suzuki GSX-S1000, 2022 to 2026, seating in the standard airbox without modification. The element is shared by four machines in the range; the full list is in the Fitment tab.