K&N High Flow Air Filter
1019-0818 (MFG #: DU-9001)
$145.99
Sale price
$145.99
Regular price
$145.99
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K&N High Flow Air Filter for KTM 125 SX Dirt Bike
K&N
K&N High Flow Air Filter for KTM 125 SX Dirt Bike
K&N
$145.99
Sale price
$145.99
Regular price
$145.99
SKU:1019-0818
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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
KTM 125 SX Dirt Bike (1992-2026)
The KTM 125 SX, a motocross staple from 1992 to 2026, consistently features a 124cc to 124.8cc two-stroke, liquid-cooled, single-cylinder engine. While no distinct "trims" beyond the standard 125 SX are widely marketed, the model has undergone continuous evolution. Significant generational changes include a brand-new engine in 1998, a shift from a six-speed to a five-speed transmission in 2003, and a completely new engine generation, frame, and suspension in 2016. A major overhaul in 2023 introduced throttle body injection (TBI) fuel-injection, an electronic power valve, electric start, and a new frame design, marking a significant technological leap for the series. FAQ:
Q: How do I ensure I select the correct parts for my KTM 125 SX?
R: To guarantee compatibility, please use the year and edition selector on this page. This will filter parts specifically designed for your motorcycle's model year.
Maintenance
| Component | Interval | Details |
| Engine Oil (Transmission Oil) | Every 5 to 10 hours | 5 hours for aggressive/race-level riding, 10 hours for recreational riding. Replace oil filter with each oil change. |
| Oil Filter | With each transmission oil change | |
| Drive Belt | Not applicable | The KTM 125 SX is a two-stroke dirt bike and does not use a drive belt. |
| Spark Plug | Check and adjust periodically | Replace as needed. Some manuals mention replacement during general service. |
| Air Filter | Every 2 to 15 hours | Inspect and clean after every ride or every 5-10 hours. Replace if damaged or excessively dirty. Intervals range from 2-3 hours (aggressive) to 15 hours (recreational). |
| Coolant | Check level periodically | Replace as per owner's manual recommendations. |
| Top-End Inspection (Piston and Cylinder) | Every 20 to 50 hours | 20-30 hours for aggressive/race-level riding, 40-50 hours for recreational riding. |
| Bottom-End Inspection (Crankshaft and Bearings) | Every 40 to 100 hours | 40-60 hours for aggressive/race-level riding, 80-100 hours for recreational riding. |
| Power Valve Inspection | Every 20 to 30 hours | 20 hours for some older models (e.g., 1994), 30 hours for newer models. |
| Chain Maintenance | After every ride or every 10 hours | Clean and lubricate. |
| Brake System | Check regularly | Check pad thickness and fluid levels. |
Maintenance intervals can vary by model year and riding conditions. It is essential to consult the official owner's manual for precise information.