Sprint Filter P08 Air Filter for Road & Track – Triumph Street Triple 660S (2017–2026) PM167S

An air filter service on a Street Triple is mostly labour. Opening the intake takes what it takes, and it takes exactly as long whether the element that comes out is dropped in the bin or blown clean and put back. The part is the cheap half of that job — and the only half that has to be bought again. That is the case for a Sprint Filter P08 rather than any promise about performance: a dry woven polyester element that is serviced instead of replaced, so the work stops ending with an order for the next one.

Key Features

• One layer of woven polyester, run completely dry — no oil to dose, wash out or leave on the air-mass sensor
• 80 µm filtration at a rated 5,050 l/m²/sec, the medium Sprint Filter designates for road and track
• The 22 micron figure is the diameter of the polyester thread, not the width of the opening between them
• Roughly twice the working surface of a conventional performance element, folded into the standard housing
• Takes the factory panel's place in the unmodified airbox — nothing cut, nothing packed, no remap
• Two years of warranty from purchase, and a service life Sprint Filter puts at the life of the motorcycle

The element is the cheap half of the job

None of the steps that reach the airbox get shorter because the element inside it is inexpensive. What a lifetime element changes is not how long the job takes, but how often a part has to be bought to finish it, and who decides when it happens. With the PM167S fitted, the intake can be opened between services out of curiosity, cleaned in ten minutes with an air line and closed again — no delivery to wait for, and no half-assembled motorcycle waiting on a panel that turned out to be the wrong one.

What changes, and what does not

Not the power. A drop-in element cannot make a homologated three-cylinder noticeably stronger, and any description that promises it is describing something other than a filter. What changes is the shape of the intake restriction over time. A cellulose panel is at its lowest resistance the moment it is fitted and climbs from there until it is thrown away; the P08 is returned to its starting condition every time it is cleaned, so the engine spends its life near the bottom of that range instead of drifting up towards a replacement point.

Care and cleaning

Routine work on the PM167S is compressed air held against the clean face, so what the weave caught leaves through the dirty side it arrived by. Nothing is oiled at any stage. After a wet or a filthy season, wash it in lukewarm water with a little mild detergent and rinse until the water runs clear. Dry it in moving air only — never on a radiator, never with a hot air gun, never near a flame — and refit it only once it is dry through. The maintenance sheet is in the Downloads tab.

Fitment & Compatibility

Cut for the standard airbox of the Triumph Street Triple 660S, 2017 to 2026. Two entries share this element, the 660S and the Street Triple RS/R/S /Moto2 of the same years — the airbox decides that, not the badge on the side panel. Both are listed in the Fitment tab.