Harddrive HP Classic Smooth 5-7/8" Round Air Cleaner Chrome - Harley Twin Cam & Evolution
About Harddrive
Harddrive is the house performance and replacement line built for American V-twins, covering everything from engine hardware and electrical to controls, lighting and chassis parts. The range is aimed squarely at Harley-Davidson and Indian riders who want a direct-fit part without dealer pricing, and it spans decades of model years — from Evolution-era Softails to current Milwaukee-Eight baggers.
Unleash the performance potential of your Harley Twin Cam or Evolution engine with the Harddrive HP Classic Smooth Round Air Cleaner. This 5-7/8" diameter air cleaner features a brilliant smooth chrome finish with machined accents, adding a custom touch to your V-twin.
Why riders pick this
- Aggressive 5-7/8" diameter custom design
- Smooth chrome finish with machined details
- Boosts airflow for improved engine performance
- Includes high-flow filter element for better breathing
- Mesh filter cover and billet end cap included
This Harddrive air cleaner is engineered to flow more air than a stock unit, helping your engine breathe easier and produce more usable power. It's a key component for any Stage 1 upgrade, preparing your bike for further performance modifications like cam swaps or exhaust upgrades.
Enhanced Airflow and Custom Style
- Custom 5-7/8" diameter design for a distinctive look
- Smooth chrome finish with precision-machined accents
- Includes a high-flow filter element for improved air intake
- Comes with a protective mesh filter cover and billet end cap
A Foundation for Performance
While the air cleaner body, filter, and end cap are included, remember that a model-specific bracket and breather kit are sold separately and are essential for a complete and secure installation. Pair this air cleaner with a proper dyno tune to fully realize its performance benefits and ensure optimal engine operation on your Harley-Davidson.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 120301
- UPC: 191361128905
- Finish: Chrome
- Diameter: 5 7/8 in
- Length: 6.9 in
- Width: 7.2 in
- Height: 3.5 in
- Weight: 2.51 lbs
- Country of Origin: China (Taiwan)
Common questions
What's included with this air cleaner?
This kit includes the round air cleaner body, a high-flow filter element, a mesh filter cover, and a billet end cap. A model-specific mounting bracket and breather kit are sold separately and are required for installation.
Will this air cleaner require a tune?
Installing a high-flow air cleaner often changes your engine's air-fuel ratio. For optimal performance, engine longevity, and to avoid potential issues, a dyno tune is highly recommended after installation.
Is this a direct bolt-on replacement for my factory air cleaner?
The air cleaner itself is designed to fit, but it requires a separate model-specific mounting bracket and breather kit to be installed correctly on your V-twin. Please confirm fitment for your exact year and model using our Shop by Bike tool.
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 | Harddrive |
| TYPE | Air Filters |
| SKU | 820-50501 |
| WEIGHT | 2.51 lb |
