S&S Cycle Air Cleaner Kits — Harley-Davidson

S&S Cycle Stealth air cleaner kit for Harley-Davidson, engineered with a high-strength synthetic polymer backplate and enlarged filter area to reduce intake air temperature and increase airflow. Delivers 38% more flow than stock while remaining 50-state legal and CARB-exempt.

Features

• High-strength synthetic polymer backplate reduces heat transfer to intake air
• 38 percent increase in airflow over stock
• Washable filter element
• 1-inch taller high-flow filter kit available (part 170-0127)
• Pre-filters available for extended service intervals
• Easy installation without modifications
• 50-state legal and CARB EO# D-355-50 exempt

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 170-0354C
• Weight: 1.7 lb
• Category: Air Intake Systems / Air Intake Components

Fitment

Fits Harley-Davidson models. Consult fitment guide or contact S&S Cycle to confirm compatibility with your specific model and year.

Frequently Asked Questions

Will this air cleaner bolt onto my Harley without modifications?

Yes — S&S designed this for direct installation on Harley models. No cutting or fabrication needed.

Is this legal for street use in California?

Yes. It's CARB-exempt under EO# D-355-50 and legal in all 50 states.

How often do I need to clean or replace the filter?

The washable filter element can be cleaned and re-used. Replace when damage occurs. Check regularly based on riding conditions.

Can I get a taller filter element for more flow?

Yes — S&S offers a high-flow 1-inch taller filter kit under part number 170-0127 for additional airflow if desired.

Will I need to rejet or tune after installing this air cleaner?

An air cleaner alone may not require remapping, but a fuel tune can optimize performance gains from the increased airflow.