The facts.
DescriptionThe whole story▼
Every service schedule carries a line telling you when to replace the air filter, and that figure was worked out for a component with exactly one direction of travel. A paper panel starts at its best and declines from there, so the only sensible instruction to print is a distance at which it goes in the bin. Fit a washable element to an NK 800 and the line stops describing anything at all. There is nothing left to replace, and what takes its place is not a number but a habit somebody has to keep.
Key Features
- Single dry layer of woven polyester, threads from 22 µm across, weave rated at 80 µm
- Rated flow of 5,050 l/m²/sec through clean material
- Sits in the series airbox in place of the paper panel — nothing trimmed, no fuelling work
- Holds back 93.13 % of 100-micron test particles, against 76.42 % for four-layer oiled cotton
- Roughly double the filtering area of other performance elements
- Never oiled at any point, designed for the motorcycle's service life, two years of warranty from purchase
From a printed figure to a rhythm
The replacement mileage in a manual is doing two jobs at once: it estimates when a panel is spent, and it forces the box open on a schedule so somebody actually looks. Only the first job disappears when the panel becomes washable. The second still matters, and it now belongs to the owner rather than to the workshop. In practice the rhythm is easy to build, because checking costs nothing but the time to lift the cover: look once at the end of a dusty spell, once before a long trip, once before the bike is put away for winter, and the interval writes itself out of what you find.
What the weave is actually offering
Not power. A drop-in element does not make a standard NK 800 noticeably stronger, and a page that suggests otherwise is selling something the part cannot deliver. The offer is a lower intake restriction that stays near its starting value across the whole interval rather than creeping up unannounced, plus a component that returns to a known condition instead of being consumed. On a naked middleweight ridden all year, in traffic as much as anywhere, that steadiness is worth more than any single figure on the data sheet.
Care and cleaning
Compressed air on the clean face, worked outwards, is the standard service and returns the dry load the way it came in. Sticky deposits — insects, road film, the grey layer that city riding leaves — need lukewarm water with a mild detergent and a rinse until the water runs clear. Dry it slowly in moving air, never with a heat gun, a radiator or a flame, and refit the PM273S dry with nothing sprayed onto it. The maintenance sheet is in the Downloads tab on this page.
Fitment & Compatibility
Made for the airbox of the CFMOTO NK 800 built from 2023 to 2026, one element per machine. CFMOTO uses the NK name across several engine sizes with different part numbers behind it, so order by this code and the model year.
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- CFMOTO NK (2023–2026)
Questions, one topic at a time.
Get the real shipping cost for this item to your address — the same rates as checkout.
Choose a destination and hit Estimate — we fetch the live rates for this item.
We’re based in Germany. Standard delivery goes by DHL and national postal services and takes about 2–5 days within Germany, 1–2 weeks within the EU and 2–6 weeks outside the EU. Need it sooner? Express delivery reaches most of the world within a few days — just choose it at checkout where available.
Your exact shipping cost is calculated by destination and weight and shown at checkout before you pay — no hidden fees. Express delivery is selectable at checkout where available.
Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.
Within the EU, no — our prices already include all duties and EU VAT. For deliveries outside the EU (e.g. Switzerland, the UK or the USA), your order may be subject to import duties and taxes set by your country. These are collected by the carrier when your parcel arrives, aren’t included in our prices, and are outside our control.
As soon as your parcel ships we email you a tracking link, so you can follow it all the way to your door.
On out-of-stock items you can request a delivery time or leave your email to be notified the moment it returns — just use the notification box on the product.
You have the right to cancel within 14 days of receiving your order. Register your return by email first; once it’s approved you have a further 14 days to send the goods back. Items should be unused and in their original packaging.
Register your return by email with your order number before sending anything back, and we’ll send you the return instructions. Please note: returns that aren’t registered in advance can’t be accepted.
The quickest way is to place a new order for the size you need and register a return for the original by email — just let us know it’s an exchange.
We’re sorry — that shouldn’t happen. Contact us with your order number and a photo as soon as you can, and we’ll arrange a replacement or refund right away. Faulty goods are always covered by your statutory warranty.
Refunds go back to your original payment method, usually within 3–5 working days of your return reaching our warehouse.
PayPal, all major credit and debit cards (Visa, Mastercard, American Express), Klarna (pay later and instalments), Apple Pay, Google Pay and more — all processed securely via PayPal and Mollie.
Yes. Choose Klarna at checkout to split your purchase into flexible monthly installments.
Your payment is taken when you place your order. If you choose Klarna, you pay later according to Klarna’s terms.
Every payment runs over an SSL-encrypted connection through certified providers. We never see or store your full card details.
If your order hasn’t shipped yet, contact us as soon as possible and we’ll do our best to change or cancel it.
No — you can check out as a guest. An account simply lets you track orders and reorder faster.
For customers in the EU, prices are shown including your country’s local VAT. For customers outside the EU, prices are shown without VAT — instead, your country’s import taxes and duties may apply on delivery (see the customs question).
Yes. Your invoice is attached to your order confirmation email and is also available in your account.
Yes. We’re an authorised dealer, so every product is 100% original and comes with the full manufacturer warranty.
Yes. Everything we sell is genuine and comes with the manufacturer’s warranty, on top of your statutory rights. Keep your invoice as proof of purchase and contact us if you ever need to make a claim — we’ll help you through it.
Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.