K&N HA-4099 Off-Road High-Flow Air Filter for Honda TRX400EX 1999-2008

K&N HA-4099 Off-Road High-Flow Air Filter for Honda TRX400EX 1999-2008

The K&N HA-4099 Off-Road High-Flow Air Filter is specifically designed to improve the performance of the Honda TRX400EX ATV models from 1999 to 2008. This air filter enables enhanced airflow, facilitating optimal engine efficiency and performance, especially in off-road conditions where dust and debris can hinder the airflow. The K&N design features a high-flow pleated cotton filter media that significantly increases filtration capacity while maintaining exceptional airflow characteristics.

When installed, the HA-4099 air filter helps to boost horsepower and acceleration, giving riders a noticeable increase in power. The washable and reusable nature of this air filter means that it requires less frequent replacement than standard paper filters, making it a cost-effective and eco-friendly option for enthusiasts. Designed for easy installation, this filter is engineered to fit perfectly in the OEM housing without any modifications, ensuring that you can quickly enhance your ATV’s performance.

FITMENT: This air filter is compatible with Honda TRX400EX models manufactured between 1999 and 2008.

Key Features & Benefits

• High-flow design for increased horsepower and acceleration.
• Washable and reusable, reducing maintenance costs over time.
• Engineered for easy installation without modifications to the OEM setup.
• High-quality pleated cotton media for superior filtration performance.
• Durable construction ensures longevity in off-road conditions.

Shipping. Free on every order, US only. Orders arrive in 2–4 days.

Returns. 30-day returns, except in extreme cases.

Support. Our team is available 24/7 for fitment mismatches or any other reason.

Warranty. Full manufacturer guarantee.