S&S Cycle #550-1010 - 4-1/2" Black MK45 Cutlass Performance Mufflers

Mk45 Slip-On Mufflers are the result of decades of riding, racing and tuning. Combining both a stainless steel perforated core baffle with Race-TEX cartridge packing, they create a deep rumble and improved horsepower and torque, all while adding a unique look with styled aluminum end caps.
Fitment
2017-Up Touring Models

Features & Benefits

7 horsepower gain
Stainless steel baffle with RaceTEX cartridge packing
Mufflers offered in show quality chrome or Guardian Black finishes
Removable dB Reducer (J2825 compliant)

Fitment

Year(s)	Make	Model Code	Model
2017-2025	Harley-Davidson	—	M8 Touring