The facts.
DescriptionThe whole story▼
The fair way to introduce this element is to name the cost before the benefit. Its rated flow is 1,800 l/m²/sec. The woven element that fits the same Classic 350 airbox is rated at 5,050, so the non-woven passes a little over a third as much air through the same square metre of fabric. Sprint Filter prints both numbers rather than the flattering one, which is what makes this a real choice. What is bought with the reduction is filtration at 14 microns instead of 80, and whether that exchange is sensible depends entirely on how much fine grit the air over your usual roads is carrying.
Key Features
- Dry non-woven fabric rated at 14 microns, with a flow figure of 1,800 l/m²/sec
- Put down by Sprint Filter for dust, daily distance and endurance rather than outright breathing
- No oil at any point in its life, so nothing sticky is held and nothing travels forward
- Approximately double the filtering surface of other performance elements
- Sits in the standard housing in place of the paper panel: nothing modified, nothing remapped
- Washable, reusable and warranted for two years, designed to outlast the service schedule
What the reduction actually costs a 350 single
A single cylinder of this size, ridden at road speeds, works well inside the volume of air its intake can supply, and the airbox and mapping were signed off around a paper panel to begin with. The surrendered flow is therefore affordable here in a way it would not be on a highly tuned multi. Affordable is not free, though, and on clean sealed roads there is no reason to spend it at all: the woven medium is the better buy there, and Sprint Filter sells it for this same box.
The part of the bargain worth having
Where the air is genuinely gritty the argument turns round. What passes an air filter does not come back out. It reaches the bore, the rings and the valve seats, and it accumulates there. A finer medium moves that boundary in the only direction that matters for an engine expected to run for years. None of it makes the motorcycle quicker, since a drop-in filter does not make a standard 350 single noticeably stronger, but it does decide what the engine has to swallow.
Care and cleaning
Service the CM231P14 dry. Compressed air, applied to the clean side and worked outwards, is the whole routine in ordinary use. A wet or salted winter can leave a film that air will not shift; lukewarm water and a mild detergent deal with that, rinsed until the run-off is clear. After that, air drying only, never a radiator and never a flame, and back into the box with nothing sprayed on it. The maintenance sheet sits in the Downloads tab.
Fitment & Compatibility
For the Royal Enfield Classic 350 built between 2022 and 2026. One part number, five motorcycles: the Bullet 350, the Goan Classic 350, the Hunter 350 and the Meteor 350 take the identical element. Every year span is listed in the Fitment tab.
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- Royal Enfield Bullet (2023–2026)
- Royal Enfield Classic (2022–2026)
- Royal Enfield Goan Classic (2025–2026)
- Royal Enfield Hunter / Hntr (2022–2026)
- Royal Enfield Meteor (2021–2026)
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.