United States · since 1969
K&N
K&N make washable cotton-gauze air filters and oil filters with a nut welded to the housing for easy removal. The practical draw is a filter you clean and reuse for the life of the bike rather than a consumable.
Price bands by product line
Indicative street prices in USD for typical middleweight fitments, reviewed 2026-09-01. Litre-bike and large adventure fitments usually sit at or above the top figure.
| Part | Budget | Typical | Premium |
|---|---|---|---|
| Replacement air filter — Drop-in washable panel or round element | $55 | $83 | $110 |
| Recharger service kit — Cleaner plus filter oil, several services per kit | $15 | $23 | $30 |
| Oil filter (HP series) — Canister with welded removal nut | $12 | $19 | $25 |
| Intake kit — Filter plus housing for specific models | $200 | $310 | $420 |
Where K&N is the right answer
- High-mileage owners who want to stop buying paper filters
- Easier oil filter removal thanks to the welded hex
- Bikes with intake work where airflow is already the limit
Trade-offs worth knowing
- Over-oiling after cleaning can foul airflow sensors
- Filtration is less fine than good paper media in very dusty conditions
- Power gains on a stock engine are small to nil
Before you order
- Let the element dry fully and oil sparingly before refitting
- In heavy dust, shorten cleaning intervals rather than trusting mileage
- Torque oil filters to spec even with the hex — hand-tight is not a spec
At a glance
| Origin | United States |
|---|---|
| Founded | 1969 |
| Categories | Engine & Filters |
| Entry price | $12 |
| Top of range | $420 |
| Data reviewed | 2026-09-01 |
What these parts cost to fit
Category pages carry labour hours, DIY time, difficulty and the checks that decide whether a part fits.
Check fitment on your bike
Most parts here are sold per model and generation. Start from your bike, not from the brand.
Honda CBR600RR
Parts that fit 2026
Kawasaki Ninja 400
Parts that fit 2026
Suzuki GSX-R600
Parts that fit 2026
Yamaha YZF-R1
Parts that fit 2026
Harley-Davidson Sportster 883
Parts that fit 2020
KTM 390 Duke
Parts that fit 2026
BMW S 1000 RR
Parts that fit 2026
Ducati Panigale V4
Parts that fit 2026
Triumph Street Triple
Parts that fit 2026
Indian Scout
Parts that fit 2026
Aprilia RS 660
Parts that fit 2026
Royal Enfield Classic 350
Parts that fit 2026
FAQ
Will a washable filter add power?
On a standard engine, expect no measurable change. The real benefit is that you stop buying filters and can service it at home in minutes.
How often should it be cleaned?
Inspect at every oil service and clean when the pleats are visibly loaded. Dusty or off-road use can mean every few hundred kilometres.