Gravity Exhaust Systems are designed and manufactured to enhance the sound, appearance and most importantly, the performance of your vehicle. All systems are designed in house using the OEM mounting points to ensure smooth fitment every time. ---3″ Diameter to maximise flow and power gains ---Valved system so the volume is in your control ---Works with the OEM Valve Controller for ease of install ---Suitable upgrade for a stock car or to provide gas flow for a higher powered M140i ---Engineered to improve throttle response and increased power and torque across the entire RPM range Compatible with: BMW 1 Series M140i F20 F21 LCI 2016-2019 models Please note: as this fits onto the catalytic converter, this will remove the GPF on GPF models.
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