Magnaflow Cat-Back Exhaust for F8X BMW M3/M4 (19187) K&N SD is the "Standard Duty"

SD is the "Standard Duty" and can handle up to 450 WHP

Wastegate open pressure setting for controlling boost spikes and faster spool

• Specifically designed to handle high horsepower

8mm Moly CUS IPA CUS Standard 8550XX 85

• Individual height adjustment of the standard suspension kit

Magnaflow Cat-Back Exhaust for F8X BMW M3/M4 (19187) K&N SD is the "Standard Duty"MagnaFlow Sport Series Black Cat Back Exhaust for 2015 2020 BMW M3 M4. Features a full, 409 stainless steel construction with mandrel bent 2. 5" tubing and 3. 5" dual tips with a stealthy satin black high temp coating throughout. Vehicle Fitment: 2015 2018 BMW M3 (F80) 2015 2020 BMW M4 (F82 F83) Install Instructions: PDF Install Guide The Sport Series Black Exhaust System delivers maximum performance, reduced mass and an aggressive exhaust sound.