Add high-performance style and provide the proper airflow for a Stage 1 Slip-On Exhaust (sold separately) with this Thunderstroke Forward Stage 1 Air Intake. This Air Intake makes it clear that your bike is way beyond stock and is worth noticing. The forward-facing intake has a visible, exposed red filter. This is an ideal Air Intake to use with the Stage 1 Slip-On Exhaust. Dealer installation required for recalibration to ensure peak performance. Important Regulatory Information