K&N High Flow Air Filter for Honda FourTrax 250 ATV
K&N High Flow Air Filter for Honda FourTrax 250 ATV
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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
Honda FourTrax 250 ATV (1985-1987)
The Honda FourTrax 250 series (1985-1987) was a diverse lineup of ATVs, encompassing both utility and sport models. These vehicles were powered by 246 cc engines, with significant variations in engine type and cooling across the range. The 1985-1987 period saw the introduction of several distinct models under the FourTrax 250 name. The TRX250 (utility model), initially air-cooled (1985-1986), transitioned to a liquid-cooled engine in 1987. The high-performance TRX250R (2-stroke sport model) was introduced in 1986, receiving engine updates in 1987 (increased compression, carburetor and cylinder modifications). The TRX250X (4-stroke sport model) was also introduced in 1987, offering a different sport-oriented option. These distinctions are crucial for parts compatibility. FAQ: How do I know which Honda FourTrax 250 model I have? The Honda FourTrax 250 series from 1985 to 1987 includes several distinct models like the TRX250 (utility), TRX250R (2-stroke sport), and TRX250X (4-stroke sport). Please use the year and model selector on this page to ensure you find parts specific to your ATV.
Maintenance
| Component | Interval | Details |
| Engine Oil | Initial: 150 km, 20 h, or 1 month. Regular: 1 000 km, 100 h, or 12 months (whichever comes first). | |
| Oil Filter | Initial: 150 km, 20 h, or 1 month. Regular: 1 000 km, 100 h, or 12 months (whichever comes first). | Generally recommended to change with every oil change. |
| Air Filter | Cleaning: Every 1 000 km or 100 h. Replacement: Every 12 months or 100 h (whichever comes first). | More frequent cleaning and replacement required in unusually wet, dusty, or sandy conditions. |
| Spark Plug | Inspection: Every 1 000 km or 100 h. | The spark plug gap should be 0.6-0.7 mm. |
| Coolant | Inspection: Every 1 000 km or 100 h. | Check the coolant level at each fuel stop. |
| Drive Belt | Not applicable | The 1985-1987 Honda FourTrax 250 (TRX250) models are shaft-driven and do not utilize a drive belt for power transmission. |