

⚡ Ride Faster, Filter Smarter – Own the Trail with K&N!
The K&N High-Flow Original Lifetime Engine Air Filter is a premium, washable replacement filter designed specifically for 2021-2024 Honda CRF300L models. It enhances engine performance by increasing airflow, boosting horsepower and acceleration while providing superior filtration with multi-layer cotton gauze media. Engineered for a precise OEM fit, it’s reusable for the life of your vehicle and backed by a 10-year/million-mile warranty, making it a cost-effective and eco-friendly upgrade for off-road enthusiasts.

| ASIN | B0CFWG8RBM |
| Best Sellers Rank | #549,346 in Automotive ( See Top 100 in Automotive ) #6,460 in Automotive Replacement Air Filters |
| Brand | K&N |
| Brand Name | K&N |
| Customer Reviews | 4.4 out of 5 stars 35 Reviews |
| Fit Type | Universal Fit |
| Included Components | 1 Air Filter |
| Item Dimensions L x W x H | 5.25"L x 4.63"W x 1"H |
| Item Height | 1.69 inches |
| Item Type Name | Replacement Air Filter |
| Manufacturer | K&N Engineering, Inc. |
| Manufacturer Part Number | HA-3021 |
| Manufacturer Warranty Description | 1 Year Limited |
| Model Number | HA-3021 |
| OEM Equivalent Part Number | HA-3021 |
| OEM Part Number | HA-3021 |
| Product Dimensions | 5.25"L x 4.63"W x 1"H |
| Product Grade | Performance Part |
| Shape | Panel |
| UPC | 024844395979 |
| Unit Count | 1.0 Count |
C**R
I noticed a nice difference in performance!
I got this K&N filter for my Honda CRF300L Rally and I gotta say it really feels like a quality filter! It's been a long time since I've used a K&N filter and had forgotten how much I like the quality of them and the cleaning and oiling process. I currently have a Twin Air foam filter on the bike and wanted a back up filter so that I don't have to be down when it is time to clean the air filter. Amazon had a great price on the K&N when I went looking, so I ordered it. It was about a week after I installed it that I went for a ride and I had forgotten that I installed the new air filter. As I was riding, I noticed that the bike seemed a little more peppy and that's when I remembered the new air filter. So for me, I would say the K&N filter has enhanced the performance! My one concern is that hopefully the K&N filter doesn't allow more dirt in when I am riding in dusty conditions. I will be monitoring that to make sure dirt isn't making it past the filter. But if it does a good job with the filtering, I will be very happy because it definitely made a nice difference in the performance!
M**N
For my CRF 300L
Better than stock. Hard to install though.
B**I
Good product
Niceeeeee
P**N
Great upgrade from OEM
Without a doubt...one of the best upgrades I've done on my Rally....well worth the purchase
O**!
Not important.
Five times the cost of a stock filter. Zero gain in performance. Washable tho. I use a cleaner and filter oil kit.
D**N
Buen producto
Buenas calidad
W**Y
Too Difficult to Install for Me
I'm sure it's a good filter but installing it correctly is a pain for a CRF300L. It comes in two pieces - a frame and the filter. The filter just drops into the frame but doesn't fasten to it. I guess so one filter can fit into different vehicles with a different frame. Anyhow I couldn't get the frame to fit into the keeper recesses of the airbox while keeping the filter in the frame. Maybe could be done easily w/practice but I lost patience w/it.
C**S
Does not seal
The framework flexes too much and it will not stay in place. It pops out of place. Clips do not stay secure. If this happened after I put it together I could have destroyed my engine.
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