Sprint Filter P08 Air Filter for Road & Track – Triumph Trident 660 (2021–2026) SM223S

The service schedule is written in kilometres. A Trident 660 is often not ridden in kilometres at all — it is ridden in hours. Traffic, junctions, a commute that takes forty minutes to cover eight kilometres, an engine drawing air the whole time while the trip meter barely moves. A filter does not age by distance. It ages by the volume of air pulled through it and by how dirty that air was, and neither figure appears on the odometer. The Sprint Filter SM223S is the dry woven polyester element for this airbox, cleaned with compressed air and used again, so the decision stops hanging on a number that was never measuring the right thing.

Key Features

• A single woven layer, polyester threads from ø 22 microns, 80 µm aperture
• Airflow rated 5,050 l/m²/sec, the standard specification for road and track use
• Never oiled and completely dry: nothing migrates onto the air sensor or the throttle bodies
• About twice the filtering surface of other performance filters, in the unmodified airbox
• Drops into the standard airbox in place of the paper panel — no modification, no remap
• Washable and reusable for the life of the motorcycle, two years of warranty from purchase

Hours, not kilometres

City air is also the dirtier air. The intake is offered whatever the traffic has just stirred up: brake and tyre debris, exhaust particulates, the dust that lies on a road surface until something moves it. A Sunday of three hundred flowing kilometres passes far more air through the element than a week of stop-start commuting, yet the commuter's air is the worse of the two and the hours accumulate regardless. Neither case is described well by a fixed distance. What suits both is an element that costs nothing to service, so the check happens when the riding suggests it. To be plain about the rest: a drop-in filter does not make a standard 660 triple noticeably more powerful. What you get is a low intake restriction returned to its starting value every time, rather than one that only ever climbs.

Restricted or not, the airbox is the same

Plenty of Tridents spend their early years restricted for an A2 licence and are freed later, and plenty are the first bike their owner services personally. Neither changes anything here. Whatever form the restriction takes, it is not in the airbox: the intake and this element are the same part on both sides of that change.

Care and cleaning

Take the SM223S out, put compressed air through it from the clean side outwards, and normal maintenance is done. A winter of road film earns the longer version: lukewarm water with a mild detergent, rinsed until the water runs clear, then a complete dry in open air, with heat and flame ruled out. It is refitted dry and never oiled. The maintenance sheet sits in the Downloads tab.

Fitment & Compatibility

Made for the Triumph Trident 660 built from 2021 to 2026. The Trident came first and the Tiger Sport 660 of 2022 to 2026 followed on the same platform, so the same element covers both — two machines in total on this part number. Model years are listed in the Fitment tab.