Sprint Filter P08 Air Filter for Road & Track – Zontes ZT 310-T (2021–2023) SM277S

Most maintenance instructions carry some slack. One of the instructions for this element carries none: it must never be dried with heat or a flame. That single line tells you more about the part than any performance claim could, because it tells you what the part is. A woven textile, dry from manufacture, washed deliberately as part of its normal life — and ruined by the shortcut that would speed the washing up.

Key Features

• Single-layer polyester weave, run dry: 80 µm filtration, 5,050 l/m²/sec of flow
• Washable and reusable, with a service life Sprint Filter specifies as that of the motorcycle
• Fits the standard airbox in place of the original panel, without modification or remapping
• Around twice the filter area of the usual performance element
• No oil at any stage, so there is no dose to get wrong and no film to thin out
• Two years' warranty from the purchase date

The one instruction with no tolerance in it

Water is not the enemy of this element; heat is. A paper panel that gets soaked has been damaged, because its fibres swell and never fully recover their spacing. A polyester weave treats wet as a temporary condition: water passes through it, the trapped dust travels with the water, and the fabric returns to the geometry it was woven to. Warm air will do the same job as a heat gun given a little patience, and the patience is not optional. Polyester fibres of around 22 µm can be deformed by heat long before anything looks scorched, and a deformed mesh is no longer the mesh in the specification.

An instruction sheet that says clean, not replace

That is the real difference in category. A part with a cleaning procedure has left the repeating column of the service schedule; a part with a replacement interval never does. It does not follow that the ZT 310-T gains any performance from it — a drop-in filter does not add power to a standard machine, and this one does not claim to. What follows is that intake maintenance becomes a job rather than a purchase, and jobs can be done whenever the airbox is open rather than whenever a part has been ordered.

Care and cleaning

Direct compressed air at the clean face and work outwards; the dust that the weave arrested leaves the way it arrived. For a greasy rather than dusty element, use lukewarm water and mild detergent, then rinse thoroughly. Air-dry only — no flame, no oven, no hot air gun — and fit the SM277S dry, exactly as it comes out of the wash, with nothing sprayed or wiped on it. The full procedure is in the maintenance sheet under the Downloads tab.

Fitment & Compatibility

This is the P08 for the Zontes ZT 310-T of 2021 to 2023. It is one of nine Zontes entries served by a single element code, spanning the 250, 310 and 350 machines on the fitment list. The code and the model year are what decide the order.