S&S Cycle Air Cleaner Kits — 2001-2015 Harley-Davidson Softail Models

S&S Cycle air cleaner kit for 2001-2015 Harley Softail models, featuring a high-flow filter element and die-cast aluminum backplate that increases airflow and delivers measurable horsepower gains. Kit includes backplate, washable filter, top cover, hardware, and installation instructions.

Features

• High-flow filter design increases airflow
• Die-cast aluminum backplate
• Washable and reusable filter element
• 50-state legal and CARB EO# D-355-27 exempt
• 5 percent horsepower increase
• Easy bolt-on installation

Specifications

• Brand: S&S Cycle
• Manufacturer Part #: 170-0599
• Category: Air Intake Systems / Air Intake Components
• Weight: 3.1 lb

Fitment

Fits 2001-2015 Harley-Davidson Softail models.

Frequently Asked Questions

What's included in the kit?

Backplate, washable filter element, top cover, mounting hardware, and detailed installation instructions.

Is this legal for street use in all states?

Yes — CARB EO# D-355-27 exempts this kit from emissions tampering regulations, making it 50-state legal.

Can I upgrade to a higher-flow filter?

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

Do I need to rejet or tune my carburetor?

For carbureted models, mild rejetting may optimize performance; fuel-injected models typically require no changes.

How often should I clean the filter?

Clean and re-oil the washable element every 10,000-15,000 miles, or whenever it appears visibly dirty.