Sprint Filter P14 Air Filter for Dusty Conditions – Honda CB300R (2018–2026) SM219P14

Sprint Filter designs the P14 to last the life of the motorcycle, and that is worth reading precisely. It is a claim about the medium, not a promise that the element cannot be ruined. In practice a reusable filter almost never dies of dust; it dies of handling, in a garage, in about four minutes. So the most useful thing to say about the Sprint Filter P14 SM219P14 on a CB300R, a machine many owners keep for years and service themselves, is not another paragraph about microns. It is the short list of things that end one of these early, all of which are avoidable and none of which are obvious.

Key Features

• Nothing cut, nothing drilled: the standard airbox takes it unmodified, without a remap
• 14 microns of filtration at an airflow figure of 1,800 l/m²/sec
• Dry and unoiled, which makes refitting a clean and repeatable job
• Roughly twice the filtering surface that other performance elements manage
• Compressed air regenerates it and it goes back in — no purchase involved
• Two years of warranty on a part built to outlast the service schedule

How a reusable filter actually dies

Heat is the first one. A hot air gun, a radiator or a warm exhaust will dry it quickly and distort the medium and its sealing edge while doing so, which is why the instruction is open air and patience. Refitting it damp is the second: moisture in the pleats collects the next lot of dust into a paste rather than letting it sit loose on the surface. Then there is compressed air used from the wrong side, or held close enough to push dirt into the material instead of lifting it out, and finally anything sharp used to help — a screwdriver, a brush with a metal ferrule, a fingernail through a pleat. Petrol, solvent and degreaser belong nowhere near it either. Look after the sealing face as carefully as the medium, because a filter that does not seal has not filtered anything.

Chosen for the dirtiest riding, not the average day

The CB300R is often the only motorcycle in the garage, which means it takes the commute, the gravel access road and the long summer trip alike. Media are a trade rather than a ladder: the P14 holds back more than the P08 and flows 1,800 l/m²/sec against 5,050, while the T12 goes further again at 7 microns and 560. Pick by the worst air you ride in, not the average. And nobody should buy this expecting more power — a standard bike will not feel different, and the P14 deliberately gives up flow to gain retention.

Care and cleaning

The normal service is compressed air, clean side, blown outwards. For a deeper clean, lukewarm water and a mild detergent, rinsed until the water runs clear. Then leave it in open air until it is genuinely dry: heat and flame are what ruin these elements, and a damp one goes back worse than it came out. Refit it dry. The Sprint Filter maintenance sheet is in the Downloads tab.

Fitment & Compatibility

Made for the Honda CB300R from 2018 to 2026. The same element covers four machines from this airbox, the CB125R, CB150R, CB250R and CB300R, across the same model years. The full list is in the Fitment tab.