4-1/2in. Mk45 Slip-On Mufflers – Black with Black Thruster End Caps. Fits Touring 2017up.

Features & Benefits:-

* Mk45 Slip-On Mufflers are the result of decades of riding, racing tuning.

* Combining both a stainless steel perforated core baffle with RaceTEX cartridge packing.

* They create a deep rumble & improved horsepower & torque, all while adding a unique look with styled aluminium end caps.

* Includes removable dB Reducer.

* J2825 compliant.

* Stainless steel baffle with RaceTEX cartridge packing.

* High Temperature Ceramic Black Finish.

* 7 horsepower gain with Stealth Air Cleaner Kit.

Tech Tips:-

* Does NOT fit 2017up Trike models. The 2017-2020 Trike’s use 1995-2016 fitment Touring mufflers.

* In 2021, for International Models, Harley shrunk the header pipe where the mufflers clamp on & added a gasket. If you are running stock header pipes you will need # CG-C10365 (Muffler Gasket Kit). If you have aftermarket headers pipes, these don't require gaskets.

* Fuel Mixture Calibration is Advised.

* Recommended Additional Purchase # PYO-SPAB Straight Pipes Adjustment System

Proudly Made in the USA by S&S Cycle !

MFR PART No: 550-0666
ROLLIES PART No: SS550-0666