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 Speed View optical Class 1

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

megaphone muffler body with high-flow catalyst

Expanding Knuckle Gussets: Offer additional protection and flexibility

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

Spandex stretch sidewalls and perforated design elements promote breathability and comfort during long rides or intense activity

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 Speed View optical Class 1Power 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