Sprint Filter P08 Air Filter for Road & Track – QJ Motor SRT 550 SX (2023–2025) PM209S

Of the seven machines this element covers, the SRT 550 SX is the only one whose entry has already closed: 2023 to 2025, with no open end after it. That is an ordinary thing for a model and an awkward thing for its consumables. Anything that has to be bought again eventually becomes a question of who still keeps it on a shelf, and air elements sit near the front of that queue, because nobody orders them in advance and nobody notices they have gone until one is needed. A washable filter takes the SRT 550 SX out of the queue altogether.

Key Features

• Fits the standard SRT 550 SX airbox with no modification and no fuelling change
• Dry polyester cloth in a single layer: 80 µm at a rated 5,050 l/m²/sec
• Threads from ø 22 microns across — the opening is woven, not punched through
• Cleaned and reused, so there is no consumable to source in later years
• About double the filtering surface of the performance filters it replaces
• Two-year warranty, and a life specified as the service life of the machine

Consumables outlive production runs

A motorcycle stays on the road far longer than it stays in a catalogue, and the parts that keep it there fall into two kinds: the ones fitted once and the ones bought over and over. The second kind is where a discontinued model becomes tiresome — not because anything is hard to make, but because demand thins out and stock follows it. Turning a repeat purchase into a cleaning job removes that dependency entirely. There is no reorder to place, no substitute part number to research, and no service postponed because a panel has not arrived. It does not, to be clear about it, make the SRT 550 SX any faster; a drop-in element cannot, and this one is not sold on that basis.

Still a current part number

The interesting detail is that this element does not go out of production with the model it was bought for. Sprint Filter lists the same code against machines built through 2026, so PM209S remains a live number long after the last SRT 550 SX left the line. An owner therefore inherits the supply of a range that is still selling, rather than the supply of a model that has stopped — and, having washed the panel rather than replaced it, is unlikely ever to need that supply at all.

Care and cleaning

Direct compressed air at the clean face and work it across the panel so the dirt exits by the route it entered; that is a full service on most occasions. A greasy film rather than dry dust calls for lukewarm water and a little mild detergent, rinsed out until the water runs clean. Everything then rests on drying properly: air alone, no heat source of any description, and no refitting until the weave is dry all the way through. The maintenance sheet is in the Downloads tab.

Fitment & Compatibility

Cut for the QJ Motor SRT 550 SX built from 2023 to 2025, one element per machine — the only closed production span among the seven bikes on this filter's list, which runs across QJ Motor and Benelli alike. The full compatibility list is in the Fitment tab.