The S&S Cycle 4-1/2" MK45 Performance Mufflers - Black Thruster is an exhaust muffler for motorcycle, dirt bike, MX and street riders who want an upgraded exhaust setup. It is designed to be installed on a compatible motorcycle.

• Brand: S&S Cycle
• Product: 4-1/2" MK45 Performance Mufflers - Black Thruster
• Color: Black Thruster
• Part Number: 1801-1075
• Category: Mufflers

Always confirm fitment for your motorcycle's make, model and year before ordering.

• Mk45 4-1/2" Touring Mufflers are the result of decades of riding, racing and tuning
• Combines both a stainless steel baffle and RaceTEX cartridge packing
• Create a deep rumble and improved horsepower and torque, all while adding a unique look with styled aluminum endcaps
• Removable dB reducer
• Made in U.S.A.
• Notes
• Not for Trike applications

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