Sprint Filter P14 Air Filter for Dusty Conditions – Honda CB125R (2018–2026) SM219P14

Dust is a property of the road, not of the engine breathing it. A CB125R crosses the same gravel car park and follows the same tractor as a litre-class machine, and the air it draws in carries the same mineral load per cubic metre. What differs is what the engine has in reserve. A small single runs smaller bearing areas and narrower rings, with less material between a running surface and the point where it is out of tolerance, so the case for fine filtration is at least as strong here as on anything bigger. That is the opposite of the way money usually gets spent on small motorcycles. The Sprint Filter P14 SM219P14 is the fine end of the road range: a dry special nonwoven rated at 14 microns.

Key Features

• The fine end of Sprint Filter’s road media: 14 microns where the P08 works at 80
• An airflow figure of 1,800 l/m²/sec against the P08’s 5,050
• A dry special nonwoven with no oil on it, so no film can reach a sensor or a throttle body
• Twice the filtering surface of a typical performance element, near enough
• Direct replacement in the standard airbox — nothing modified, nothing remapped, homologation untouched
• Washed rather than replaced, with two years of warranty from the date of purchase

A small engine has less to give away

Wear from ingested grit is not an event, it is a rate. It shows up years later as compression that has quietly gone somewhere and oil consumption that was not there before, and nothing on the dashboard reports it while it is happening. On a 125 the margins that absorb it are simply smaller, and the machine is usually asked to spend a large part of its life at the top of the rev range rather than loafing, which means a lot of air passes through that element for every kilometre on the clock. A finer medium is the cheapest possible response to that.

What 14 microns costs

Being straight about the price: retention and airflow pull against each other. The P14 holds back more than the P08 does and flows 1,800 l/m²/sec against the P08's 5,050, and it also loads sooner precisely because it is catching more. Neither medium is the better one; they are made for different air. On an A1 machine capped by regulation, the flow given up here was never in play. If your riding is genuinely all clean sealed road, the P08 is the sensible choice and costs you nothing. If it is real off-road, the T12 goes further still at 7 microns and 560 l/m²/sec.

Care and cleaning

Compressed air, aimed at the clean side and blown outwards, handles the routine. A dusty spell earns something more thorough: lukewarm water, a little mild detergent, rinsing until the water runs clear, then open air until the element is dry all the way through — never with heat, never near a flame. It goes back dry, since no stage of the process involves oil. Sprint Filter’s maintenance sheet is in the Downloads tab.

Fitment & Compatibility

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