K&N High Flow Air Filter for KTM 125/ 200/ 250/ 390 DUKE/ RC (2017 - 2025) - KT-1217

K&N High-Flow Air Filter | KTM Duke & RC 125/200/250/390 (KT-1217)

Sharpen your KTM's "Ready to Race" edge with the KT-1217. This high-performance filter is the go-to upgrade for the modern generation of small-displacement KTM singles. By replacing the restrictive factory paper filter, you provide the increased airflow needed for snappier throttle response and better top-end pull.

Key Features

• Optimized Airflow: Designed to provide up to 50% more airflow than standard paper filters, allowing your engine to breathe more efficiently throughout the rev range.

• Legendary Protection: Features K&N’s signature multi-layered oiled cotton gauze media, capturing up to 99% of harmful contaminants to protect your engine's high-revving internals.

• Washable & Reusable: A permanent "Lifetime" upgrade. Simply clean, re-oil, and reinstall the filter whenever it gets dirty—eliminating the need for disposable replacements.

• Direct Drop-In Fit: Precision-molded to fit the factory airbox perfectly. It is a simple plug-and-play installation with no fueling modifications or ECU re-mapping required for standard setups.

• Race-Proven Durability: Built to withstand the vibrations of high-performance single-cylinder engines and backed by K&N’s famous warranty.

Technical Specifications

Note on 2024-2025 Models: While many parts carry over, KTM introduced significant chassis and airbox changes for the 2024+ 390 Duke. If you have the newest-generation 2024/2025 Duke with the side-mounted shock, you may require the KT-2412 instead of this KT-1217.

Why Choose K&N for your KTM?

Small-capacity KTMs are known for their aggressive power delivery. A clogged or restrictive paper filter can "choke" the engine, making it feel sluggish in the mid-range. The KT-1217 ensures your intake remains a high-velocity pathway for clean air. It also provides a slightly deeper, more purposeful intake growl that complements the KTM's engine character.