K&N HD-0900 Air Filter - Harley-Davidson Sportster
About K&N
K&N pioneered the washable, reusable cotton-gauze air filter and has been building intake products since 1969. On a V-twin, an intake swap is usually step one of the classic uncork — filter, exhaust, then tune.
Optimize the performance of your Harley-Davidson Sportster with the K&N HD-0900 Air Filter. This high-flow filter is designed to provide increased airflow to your engine, helping your V-twin breathe better and perform more efficiently.
Why riders pick this
- Increases airflow for improved engine efficiency
- Large pleated cotton-gauze filtration area
- Washable and reusable for long service intervals
- Pre-oiled and ready for immediate use
- Direct OEM airbox fit for easy installation
The K&N HD-0900 Air Filter features a robust, pleated cotton-gauze media that maximizes the filtration surface area, ensuring your engine gets clean air while allowing for greater volume. This can lead to improved throttle response and a more satisfying ride. As a washable and reusable component, it also offers long-term value compared to disposable filters.
Designed for Sportster Performance
- Pleated cotton-gauze media for a large filtration area
- Multi-layer woven construction ensures excellent filtration
- Washable and reusable design for extended service life
- Pre-oiled and ready to install directly into the OEM airbox
- Application-specific sealing bead provides a secure, leak-free fit
Simple Installation, Lasting Benefits
Installing the K&N HD-0900 Air Filter on your Sportster is a straightforward, bolt-on process. It's engineered to fit directly into your stock airbox, meaning you can achieve performance gains without needing complex fuel management recalibrations in most cases. Whether you ride an Iron 883 or a Sportster 1200 Custom, this filter is an excellent choice for riders looking to enhance their bike's intake efficiency.
Specifications
- Brand: K&N
- Manufacturer Part #: HD-0900
- UPC: 024844196644
- Length: 10.25 in
- Width: 10.25 in
- Height: 3.93 in
- Weight: 1.4 lbs
Common questions
Does this require a fuel tuner or ECU reprogram?
No, fuel management modifications are not normally required. The filter works with stock engine mapping in most applications.
How often should I clean this filter?
Inspect the filter every oil change. Clean and re-oil when visibly dirty, typically every 50,000 miles in normal conditions, or more often in dusty environments.
Is this filter compatible with my Harley-Davidson Sportster model?
This filter is designed for various Harley-Davidson Sportster models. Please consult our Shop by Bike tool to confirm exact fitment for your specific year and model before ordering.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | K&N |
| TYPE | Air Filters |
| SKU | 720900 |
| WEIGHT | 1.4 lb |
