S&S CYCLE Power Tune® XTO Muffler Insert - 1-3/4 inch Rear Plugged with 3.5 mm Holes, Part 550-1669 Fork Dampers & Parts and advanced features

and advanced features

218 certified and SNELL 2025 approved (3X/4X DOT only)

Speed View optical Class 1 internal sun visor for glare reduction and quick adjustment

megaphone muffler body with high-flow catalyst

Strategically placed airflow channels for increased ventilation

S&S CYCLE Power Tune® XTO Muffler Insert - 1-3/4 inch Rear Plugged with 3.5 mm Holes, Part 550-1669 Fork Dampers & Parts and advanced featuresPower Tune XTO Muffler Insert 1 3 4" Rear Plugged 3. 5 mm Holes Upgrade your motorcycle's exhaust system with the S&S CYCLE Power Tune XTO Muffler Insert, designed for 1 3 4 inch exhaust pipes. Crafted from durable 304 stainless steel, this muffler insert enables precise control over your bikes sound and performance. It allows you to easily adjust the power, torque, tone, and overall sound profile to match your riding style and preferences, providing