{"product_id":"sprint-filter-p08-f1-85-air-filter-honda-cb350rs","title":"Sprint Filter P08 F1-85 Air Filter for Racing – Honda CB350RS (2020–2026) SM289S F1-85","description":"\u003cp\u003eOf the five machines sharing this airbox, the CB350RS is the one most often built rather than simply ridden — flatter bars, a sportier stance and an engine simple enough that people are willing to open it. That matters here, because the P08 F1-85 is not a road part with a racing name. It passes 15,000 l\/m²\/sec against the standard P08's 5,050, and it does so by filtering at 85 microns instead of 80. The flow is bought with retention. That bargain makes sense inside a genuine competition build and makes very little sense outside one, so the honest way to sell the SM289S F1-85 is to describe the machine it belongs on.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits the airbox as Honda built it — nothing cut, nothing moved, no remap asked for\u003c\/li\u003e\n\u003cli\u003eThe racing weave passes 15,000 l\/m²\/sec, around three times the standard P08 figure\u003c\/li\u003e\n\u003cli\u003eThat flow is bought at 85 microns instead of the road medium’s 80\u003c\/li\u003e\n\u003cli\u003eDry polyester throughout, never oiled, so no film reaches the throttle body or the sensors\u003c\/li\u003e\n\u003cli\u003eRoughly double the filtering surface of other performance elements\u003c\/li\u003e\n\u003cli\u003eCompressed air brings it back into service; it is not a part that gets thrown away\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe build this element belongs to\u003c\/h2\u003e\u003cp\u003ePicture the bike it was designed around: engine assembled to a specification, exhaust and mapping already matched to it, running life measured in sessions rather than seasons, and a bottom end that comes apart on a schedule counted in hours. On that machine a slightly wider weave is a debt that gets called in early, at the next inspection, where it costs nothing. Everything upstream has to be worth the air as well — a standard 350 single with standard cams, standard exhaust and standard fuelling is not asking for three times the intake capacity, and giving it to one does not make it quicker.\u003c\/p\u003e\u003ch2\u003eWhat comes with it\u003c\/h2\u003e\u003cp\u003eA racing medium carries a maintenance culture, not just a part number. It assumes the element is inspected between outings, that the airbox is checked for anything that got past, and that the engine is opened often enough for the assumption to be tested. Fitted to a CB350RS that covers thousands of road kilometres between services, none of that happens, and the only measurable change is that slightly more of the road ends up inside the engine. If the bike is registered and used as one, choose the P08 version of this element for road and track, or the P14 at 14 microns and 1,800 l\/m²\/sec if the RS is ridden on gravel and dirt roads as its styling suggests.\u003c\/p\u003e\u003ch2\u003eCare and cleaning\u003c\/h2\u003e\u003cp\u003eCompressed air from the clean side, working outwards, then straight back in dry — between sessions that is normally the whole job on the SM289S F1-85. When it asks for more, wash it in lukewarm water with a mild detergent, rinse until the water runs clear and give it as long as it needs in open air, well away from heat and from any flame. No stage of that involves oil. The maintenance sheet is in the Downloads tab.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eMade for the Honda CB350RS from 2020 to 2026. The same SM289S F1-85 element covers five machines built on this 350 cc single; the complete list is in the Fitment tab.\u003c\/p\u003e","brand":"Sprint Filter","offers":[{"title":"Default Title","offer_id":53529925189898,"sku":"SM289S F1-85","price":258.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/SM289S-F1-85_e09453db-512a-4f4f-b45a-605d0c5dc377.png?v=1787058250","url":"https:\/\/inter-pace.com\/en-cl\/products\/sprint-filter-p08-f1-85-air-filter-honda-cb350rs","provider":"Inter-Pace","version":"1.0","type":"link"}