AWE*s second-generation Track Edition Cat Back takes all of the precision engineering and performance of its SwitchPath* counterpart, minus the valved muffler in the rear. The result is a constant *valve open* mode, at an affordable price. If you're craving rich and rowdy tones at all times, and a hefty 22.5lb weight savings, this is your dose of steel. Handcrafted from U.S.-sourced .065" wall T304L stainless steel, in house, at AWE world HQ. Featuring a unified design for OPF euro and non-euro spec cars, 50-state legal Cat Back design (perfect tone with all catalysts intact!), Precision-engineered X-pipe to unlock a clean S55 tone, 3* CNC mandrel-bent Cat Back configuration, and max gains of 12 hp and 16 lb-ft of torque at the wheels. Comes complete with AWE valve simulators to accommodate your factory exhaust valve motors, 102mm double-walled, slash-cut tips, and flaunts AWE's No Check Engine Light Guarantee, Perfect Fitment Guarantee, and AWE Lifetime Exhaust Warranty. Note: This version is known to get rowdy, and may be too much for many. For that reason, this particular version cannot be returned due to sound preference. Prepare yourself (Sport+ mode can be pretty raucous)!
AWE Track Edition Catback Exhaust for BMW F8X M3/M4 - Chrome Silver

Fitment:
BMW M3 Base 2015
BMW M3 Base 2016
BMW M3 Base 2017
BMW M3 Base 2018
BMW M4 Base 2015
BMW M4 Base 2016
BMW M4 Base 2017
BMW M4 Base 2018
BMW M4 Base 2019
BMW M4 Base 2020
BMW M4 CS 2019
BMW M4 CS 2020