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K&N HA-3021 High-Flow Replacement Air Filter is a durable, washable, and reusable performance filter designed specifically for 2021–2024 Honda CRF300L and CRF300L Rally motorcycles . It boosts acceleration and horsepower using multi-layer cotton gauze, designed to last the lifetime of the engine while enduring harsh off-road dust and dirt .

Key Features and Benefits:

Performance Enhancement: Engineered to increase horsepower and acceleration with high-flow air technology.
Durable Construction: Built with pleated cotton media and aluminum wire mesh for long-lasting use in off-road, dirt, mud, and water conditions.
Washable & Reusable: The filter is designed to be cleaned and re-oiled, eliminating the need to frequently replace disposable filters.
Easy Installation: Features a direct "drop-in" design that fits directly into the stock airbox without requiring fuel management modifications.
Application: Specifically designed for 2021, 2022, 2023, and 2024 Honda CRF300L and CRF300L Rally models.

The HA-3021 is designed to provide excellent filtration for off-road riding, often outlasting the vehicle's service life, according to Cycle Gear and J&P Cycles .

K&N HA-3021 Replacement Air Filter
The K&N HA-3021 is a high-flow original lifetime engine air filter. It's designed to increase horsepower and acceleration. The fil...

K&N Filters
K&N HA-3021 Air Filter Honda CRF300L Rally ABS 2021-2024 High ...
K&N HA-3021 Air Filter Honda CRF300L CRF300L Rally 21-24 * Designed to help increase performance on Honda CRF300 engines. * Pleate...

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K&N Air Filter HA-3021
Product Details The high flow cotton gauze air filter is washable, reusable and built to last for the life of a motorcycle engine.

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K&N HA-3021 Replacement Air Filter

K&N Filters

https://www.knfilters.com › ha-3021-replacement-air-filter

K&N Filters

https://www.knfilters.com › ha-3021-replacement-air-filter

Designed to provide increased horsepower and acceleration · Specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides · Pleated cotton media ... Read more

Durable motorcycle air intake filter HA-3021 from www.knfilters.com

In stock 504 Free delivery 30-day returns

K&N Engineering HA-3021 K&N 21-22 Honda CRF300L ...

eBay

https://www.ebay.com › ... › Air Filters

eBay

https://www.ebay.com › ... › Air Filters

K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Read more

Missing: ~~Durable~~ ‎| Show results with: Durable

K&N Air Filter HA-3021

RevZilla

https://www.revzilla.com › ... › Filters › Air Filters

RevZilla

https://www.revzilla.com › ... › Filters › Air Filters

The high flow cotton gauze air filter is washable, reusable and built to last for the life of a motorcycle engine . K&N air filters consist of four to six ... Read more

In stock Free delivery 90-day returns

K&N Air Filter HA-3021

J&P Cycles

https://www.jpcycles.com › ... › Air Filter Elements

J&P Cycles

https://www.jpcycles.com › ... › Air Filter Elements

Their innovation is in the high flow cotton gauze material, washable and reusable , ensuring durability throughout the motorcycle's lifespan. These filters ... Read more

Durable motorcycle air intake filter HA-3021 from www.jpcycles.com

In stock Free delivery 90-day returns

K&N Engineering HA-3021 K&N 21-22 Honda CRF300L ...

SpazCycle

https://spazcycle.com › ... › Adventure / Dual Sport

SpazCycle

https://spazcycle.com › ... › Adventure / Dual Sport

K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration. Features. One Year Limited Warranty. Installation ... Read more

K&N HA-3021 High‑Flow Air Filter for 2021–2025 Honda ...

eBay

https://www.ebay.com › ... › Air Filters

eBay

https://www.ebay.com › ... › Air Filters

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). Read more

Missing: ~~motorcycle~~ ‎| Show results with: motorcycle

K&N Engineering Panel Air Filter HA3021

O’Reilly Auto Parts

https://www.oreillyauto.com › ... › K&N Engineering

O’Reilly Auto Parts

https://www.oreillyauto.com › ... › K&N Engineering

K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Read more

Durable motorcycle air intake filter HA-3021 from www.oreillyauto.com

K&N Air Filter HA-3021

Cycle Gear

https://www.cyclegear.com › ... › Air & Fuel › Air Filters

Cycle Gear

https://www.cyclegear.com › ... › Air & Fuel › Air Filters

Jun 28, 2019 — K&N Air Filters stand out for their durability , with a washable and reusable design that lasts as long as the motorcycle engine itself. The ... Read more

Durable motorcycle air intake filter HA-3021 from www.cyclegear.com

In stock Free delivery 90-day returns

HA-3021 Replacement Air Filter K AND N ENGINEERING ...

eBay

https://www.ebay.com › ... › Air Filters

eBay

https://www.ebay.com › ... › Air Filters

K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Read more

Missing: ~~Durable~~ ‎| Show results with: Durable

Brand	Material	Key Benefits
Sprint Filter	Patented Polyester	Best airflow, easy care, MotoGP-proven
K&N	Cotton Gauze	Reusable, eco-friendly, good airflow
BMC	Cotton Gauze	High filtration, motorsport heritage
DNA	Cotton Gauze	High airflow, static charge tech

Who Makes the Best Motorcycle Air Filters - Sprint Filter Blog

Sprint Filter Blog

https://blog.sprintfiltershop.com › who-makes-the-best-m...

Sprint Filter Blog

https://blog.sprintfiltershop.com › who-makes-the-best-m...

What is the best material for motorcycle air filter?

For performance motorcycles, the best options are often oiled cotton gauze filters or polyester filters . These types of filters are designed for maximum airflow which brings a lot of benefits to performance motorcycles. For off-roading, you might want to consider a foam filter instead.

Maximizing Performance: Choosing the Right Aftermarket Air Filter for ...

Brock's Performance

https://brocksperformance.com › maximizing-performan...

Brock's Performance

https://brocksperformance.com › maximizing-performan...

How often should a motorcycle air filter be replaced?

Sand and dust are brutal on filters. Flip it around, though — if you're a road rider, you could go 40–50,000 miles before a filter really needs changing. Sep 29, 2025

A Guide to Motorcycle Air Filters - Bennetts Insurance

Bennetts Insurance

https://www.bennetts.co.uk › advice › bike-maintenance

Bennetts Insurance

https://www.bennetts.co.uk › advice › bike-maintenance

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Professional Durable motorcycle air intake filter HA-3021 ...

sglfilters.com

https://www.sglfilters.com › tag › durable-motorcycle-a...

sglfilters.com

https://www.sglfilters.com › tag › durable-motorcycle-a...

The HA-3021 Air Filter Element is engineered to provide reliable, high-efficiency filtration for Honda motorcycles. Compact in size yet powerful in ...