K&N Air Filter KNHA3021

The K&N KNHA3021 is a high-performance air filter designed to enhance engine airflow. The multi-layered oiled cotton construction provides up to 50% more air compared to paper filters and can help increase power. The frame is built to last for the vehicle's lifespan. Installation is tool-free and takes less than five minutes.

Design and Materials

• Multi-layered oiled cotton material offering up to 50% more air compared to paper filters to promote better airflow and potentially improved engine response
• Durable frame and material designed to withstand the vehicle's lifespan, reducing the frequency of replacements

Practicality and Features

• Washable and reusable filter to reduce replacements and limit waste
• Tool-free installation in under five minutes for simple and quick mounting
• Maintenance intervals of up to 50,000 miles depending on driving conditions to extend maintenance operations

Usage and Performance

• High-flow design aimed at improving power, torque, and acceleration for a more responsive engine
• Tested according to ISO 5011 protocol to ensure effective filtration and protect the engine from dirt ingress

Benefits

• OEM Reference HA-3021
• Limited 10-year/1.6 million kilometres warranty providing long-term coverage

Compatible with a selection of models including:

• HONDA CRF 300 L RALLY ABS E5+ 300 (2025)
• HONDA CRF 300 L ABS E5+ 300 (2025)
• HONDA CRF 300 L RALLY ABS E5 300 (2024)