K&N High Flow Air Filter for Yamaha YZ250 Dirt Bike
K&N High Flow Air Filter for Yamaha YZ250 Dirt Bike
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Description
K&N Powersports High-Flow Air Filter
Upgrade your machine’s performance with a K&N High-Flow Powersports Air Filter. Designed to increase airflow while providing superior filtration, these premium reusable filters help your engine breathe better for improved horsepower, throttle response, and overall performance.
Built with oiled cotton gauze media, K&N filters capture dirt and debris while allowing more air to reach the engine compared to traditional paper filters. The result is better performance and long-term reliability for motorcycles, ATVs, UTVs, and other powersports machines.
Unlike disposable filters, K&N air filters are washable and reusable, helping reduce maintenance costs over time. With proper cleaning and oiling, one filter can last for the life of your vehicle.
Key Features
High-flow design improves airflow and engine performance
Superior filtration protects your engine from dirt and debris
Washable and reusable for long-term value
Durable oiled cotton gauze construction
Direct OEM replacement for easy installation
Designed specifically for motorcycles, ATVs, UTVs, and other powersports applications
Why Choose K&N?
K&N is a global leader in high-performance filtration, trusted by riders and racers worldwide. Their powersports air filters are engineered to deliver maximum airflow without sacrificing engine protection, helping you get the most out of your ride.
Technical Specifications
- MFG. Part Number DU-9001
Vehicle Information
Yamaha YZ250 Dirt Bike (1974-2026)
The Yamaha YZ250, a legendary two-stroke motocross race bike, has been a dominant force on tracks worldwide since its introduction in 1974 and remains in production through 2026. This iconic model has continuously evolved, adapting to the demands of competitive racing while maintaining its core identity as a high-performance 250cc two-stroke. Over its extensive lifespan, the YZ250 has undergone several significant transformations. Initially, from 1974 to 1981, it featured an air-cooled engine. A major technological leap occurred in 1982 with the introduction of a liquid-cooled engine and the innovative Yamaha Power Valve System (YPVS). Further engine refinements in 1999 adjusted bore and stroke for improved low-end torque. Chassis advancements were equally crucial, notably the shift to a lightweight aluminum frame in 2005 and the adoption of KYB Speed-Sensitive System (SSS) front forks in 2006, which are still highly regarded. Beyond the standard motocross model, Yamaha introduced the off-road focused YZ250X in 2016 and offers special editions like the 70th Anniversary and Monster Energy liveries for 2026. Q: How do I find parts for my specific Yamaha YZ250 model year?
A: To ensure a guaranteed fit, please use the year and edition selector at the top of this page.
Maintenance
| Component | Interval | Details |
| Transmission Oil | 5 to 10 hours (aggressive/race-level use) or 10 to 15 hours (recreational use) | The YZ250 is a two-stroke engine; transmission oil is separate from the fuel/engine oil mixture. Capacity of 0.75 L for recent models. |
| Transmission Oil Filter | Inspect and replace as needed with each transmission oil change | Manuals do not always detail a specific interval, but regular inspection is recommended. |
| Belt | Not applicable | The Yamaha YZ250 uses a chain for its final drive, not a belt. |
| Spark Plug | Inspect regularly | Check spark plug condition during regular maintenance. |
| Air Filter | 5 hours (aggressive/race-level use) or 15 hours (recreational use) | Clean or replace more frequently in dusty conditions. |
| Coolant | Inspect level regularly | Check coolant level before each use and top up if necessary. |