S&S Cycle Air Cleaner Kits — Harley-Davidson

S&S Cycle Stealth air cleaner kit with carbon fiber cover for Harley-Davidson, engineered to increase filter area and airflow for measurable power gains. The high-strength synthetic polymer backplate resists heat transfer to intake air, improving engine efficiency while maintaining 50-state legal compliance.

Features

• 38 percent increase in airflow
• Carbon fiber cover — lightweight and corrosion-resistant
• High-strength synthetic polymer backplate
• Washable filter element
• CARB EO# D-355-21 emissions-exempt
• Easy installation
• Pre-filters available separately

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 170-0524B
• Weight: 2.9 lb
• Category: Air Intake Systems / Air Intake Components

Fitment

Fits Harley-Davidson models. S&S offers a high-flow (1 inch taller) filter kit under part number 170-0129 as an alternative option.

Frequently Asked Questions

Will this add horsepower to my Harley?

Yes. The 38 percent airflow increase delivers measurable power gains on naturally aspirated engines, especially when paired with tuning.

Is this 50-state street legal?

Yes. This kit is CARB EO# D-355-21 exempt and legal in all 50 states.

Can I wash and reuse the filter?

Yes — the filter element is washable and reusable. Pre-filters are sold separately if you want extra protection.

What cover options are available?

S&S offers multiple cover styles. This kit includes the carbon fiber cover, which fits all existing Stealth Air Cleaners.