Air Intake Filter Kit for Harley Twin Cam Stage 1 High Flow

Unleash Maximum Torque: Stage 1 High Flow Air Intake for Harley-Davidson Evolution Sportster

Who Is This For? Designed specifically for Harley-Davidson owners running the legendary Evolution XL engine (883 and 1200) who are ready to graduate to a Stage 1 performance setup for crisper throttle response and that iconic aggressive intake growl.

The Oxygen Deprivation: Your Evolution engine is essentially a massive air pump, but the restrictive factory plastic airbox acts like a straw, stifling your bike’s ability to breathe. When you twist the throttle to merge or pass, the engine often feels lethargic because it’s fighting a vacuum restriction. This lack of airflow prevents you from realizing the true horsepower potential of your V-Twin, leaving performance on the table.

The Engineering Solution: We engineered this Stage 1 High Flow kit to eliminate the "breath-hold" caused by OEM filtration. By utilizing a high-surface-area filter media and an open-breather architecture, this kit provides a direct, turbulent-free path for air to reach the throttle body or carburetor. The result is a more efficient combustion cycle, increased volumetric efficiency, and a guaranteed boost in both horsepower and torque across the entire RPM range.

The Comparative Edge: Why This Beats the Competition

• The Performance Gain: Delivers a measurable increase in CFM (Cubic Feet per Minute) over stock, ensuring your Stage 1 tune actually has the air it needs to make power.
• The Filtration Material: Features high-density synthetic media that captures microscopic particulates while maintaining high-flow velocity, unlike cheap paper filters that clog and lose shape over time.
• The Fitment Guarantee: Unlike "universal" kits that require custom brackets or spacers, this is a precision-engineered bolt-on kit designed to align perfectly with your Evolution engine’s mounting points.

Technical Specifications & Factory Ratings

Compatibility & OEM Reference

Fits the Following Vehicles:

• Harley Sportster XL883N (1988-UP)
• Harley Sportster XL1200C (1988-UP)
• Harley-Davidson Forty Eight (2010-2015)
• Harley-Davidson Iron 883 (2009-2015)
• Harley-Davidson Seventy Two (2012-2015)
• Harley-Davidson Sportster 883 (1988-2022)

Interchange Reference:

STAGE-1-XL-883-1200, HARLEY-TWIN-CAM-STAGE-1-HIGH-FLOW, XL883N, XL1200C, 2010-2015-48, 2009-2015-IRON, 2012-2015-72

The Performance Promise

Buy with confidence. This Stage 1 upgrade won’t void your factory warranty on 2023+ models and is designed to restore and exceed original factory performance on high-mileage bikes. Backed by real automotive experts and fast shipping to get you back on the road with more power.