K&N HA-3021 High-Flow Air Filter for 2021-2025 Honda CRF300L / CRF300L Rally

Vehicle Fitment

• 2021-2025 Honda CRF300L (All trims)
• 2021-2025 Honda CRF300L Rally (All trims)

Fitment Notes

• Compatible only with stock OEM airbox - modifications may void fitment
• If engine modifications or tuning done, jetting/ECU adjustments may be required

Features

• High-flow cotton gauze media for increased airflow and engine performance
• Pleated design provides large filtration surface area for long service intervals
• Washable, reusable and pre-oiled - ready to install out of the box
• Direct OEM airbox fit with application-specific sealing bead for secure seal
• Improved throttle response and acceleration compared to stock filter
• Reduced intake restriction - ideal for off-road and trail riding conditions
• No regular filter replacements needed - long service life reduces maintenance cost
• Durable construction suitable for dirt, dust, and mixed trail environments

Specifications

• Filter Shape: Panel air filter (OEM-style replacement)
• Filter Material: Multi-layer woven cotton gauze between aluminum mesh
• Height: approx. 1.00 in (25 mm)
• Outside Dimensions: ~5.25 in (133 mm) length x ~4.625 in (117 mm) width
• Weight: ~1 lb (0.4 kg)
• Pre-oiling included - filter ready for immediate use

Included Components

• 1x K&N HA-3021 High-Flow Air Filter

Product Description

The K&N HA-3021 High-Flow Air Filter is a premium OEM-replacement air filter engineered specifically for the Honda CRF300L and CRF300L Rally (2021-2025). Designed to directly drop into the stock airbox, the HA-3021 improves engine breathing by allowing significantly greater airflow than standard paper filters - delivering enhanced throttle response, smoother acceleration, and more consistent performance especially under off-road and trail conditions.

Constructed with multi-layer woven cotton gauze media and pleated for maximum surface area, this filter offers long service intervals and superior dust and debris filtration. It arrives pre-oiled and ready for installation - no extra parts or modifications required. Its washable and reusable design makes maintenance simple and cost-effective compared to disposable filters. For riders looking for reliability, performance gains, and easy maintenance on their CRF300L or CRF300L Rally, HA-3021 is an excellent choice.