S&S Cycle 4.5 Mk45 Tracer Slip-On Mufflers For Harley Touring Features: 7 Horsepower gain tested with S&S Cycle Power Tune Dual Header and Stealth Air Cleaner Kit Stainless steel baffle construction with RaceTEX cartridge packing MK 45 slip-ons create a deep rumble and improve horsepower and torque, all while adding a unique look with styled aluminum end caps Includes removable dB reducer (J2825 compliant) Made in the USA