K&N High Flow Air Filter for KTM 125/ 200/ 390 Duke/ RC (2011 - 2017) - KT-1211

K&N High-Flow Air Filter | KTM Duke & RC 125/200/390 (KT-1211)

Enhance the performance of your first-generation KTM single with the KT-1211. This high-flow filter is the definitive upgrade for the original 125, 200, and 390 Duke and RC models. By replacing the restrictive factory paper element, you allow your engine to breathe more efficiently, resulting in sharper throttle response and a more aggressive intake sound.

Key Features

• Performance-Driven Airflow: Designed to provide up to 50% more airflow than standard paper filters, helping your KTM reach its peak horsepower more quickly.

• Superior Filtration & Protection: Features K&N’s legendary multi-layered oiled cotton gauze media, which provides high-capacity filtration to keep road dust and debris out of your engine.

   

• Washable & Reusable: A permanent "Lifetime" filter. Instead of buying a new filter at every service, simply wash, re-oil, and reinstall—saving you money and reducing waste.

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• Drop-In Installation: Precision-engineered to fit the original factory airbox perfectly. No fueling modifications or ECU re-mapping are typically required for a standard bike.

   

• Built to Last: Constructed with a sturdy frame and backed by K&N’s famous 10-Year/Million Mile Limited Warranty.

Technical Specifications

Fitment Tip: This filter is specifically for the first-generation models. If your 390 Duke or RC is a 2017 or newer model (identifiable by the side-slung exhaust or TFT dash), you likely need the KT-1217 instead.

Why Choose K&N for your KTM?

The early KTM 390 platform is known for its punchy, high-revving nature. A clogged stock filter can make the bike feel "held back" at higher RPMs. The KT-1211 ensures a consistent, high-velocity air supply, which is critical for maintaining that signature KTM "Ready to Race" agility. It's a simple, one-time investment that pays for itself over the first few service intervals.