Cobra Sport BMW M135 (F70) Quad Exit GPF Back Performance Exhaust
Cobra Sport BMW M135 (F70) Quad Exit GPF Back Performance Exhaust
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Description
Cobra Sport performance exhaust systems are engineered to enhance sound, appearance, and build quality, delivering a more engaging driving experience while being fully guaranteed for complete peace of mind.
This Cobra Sport GPF-back performance exhaust is designed specifically for the BMW M135i F70 and features a combination of 3 inch (76.2mm) and 2.5 inch (63.5mm) mandrel-bent pipework. The system fits from the Gasoline Particulate Filter (GPF) backwards, replacing the centre and rear sections while retaining the factory catalyst and GPF.
The result is a significant improvement in exhaust tone, bass response, and overall sound level, transforming the otherwise restrained character of the M Sport model. A single, sleek resonator has been carefully tuned to complement the factory valve system, preserving everyday refinement while unlocking a more aggressive note under load.
The exhaust is finished with a choice of 4 inch (101.6mm) tailpipe designs, including premium carbon fibre options, allowing you to tailor the look to your build.
Test Results
Standard Exhaust
- Idle: 60.8 dB
- Static 3,000 rpm: 73.3 dB
- Weight: 21.7 kg
Cobra Sport GPF-Back Exhaust
- Idle: 73.4 dB (+12.6 dB)
- Static 3,000 rpm: 94.2 dB (+20.9 dB)
- Weight: 13.7 kg (-8 kg)
Additional Information
- Valved system retains full factory exhaust valve functionality
- Valve operation remains throttle-dependent, switching between refined and aggressive tones as intended
- Supplied with all required fittings and gaskets for installation
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