Transform the sound of your BMW M135i F40 with the Cobra Sport GPF back race box delete valved performance exhaust. This high quality BMW M135i exhaust upgrade replaces the centre and rear sections from the petrol particulate filter back with free flowing 3 inch 76.2 mm pipework for a deeper, louder, more aggressive exhaust tone while retaining the factory catalyst and GPF.
Why choose this Cobra Sport M135i F40 exhaust
- Made in 3 inch 76.2 mm pipework for enhanced flow and sound
- Fits from the GPF back replacing the centre and rear sections
- Race box delete design for maximum soundtrack and presence
- Valved option retains factory valve operation through drive modes
- Keeps the stock catalyst and GPF in place
- All relevant fittings and gaskets supplied
- Backed by Cobra Sport’s fully guaranteed sports exhaust range
Real world sound results
- Engine at idle: 73.5 dB (+10.5 dB)
- Static 3,800 rpm test: 95.1 dB (+13.1 dB)
Tailpipe options
This system is available with 4 inch 101.6 mm tailpipe options, including premium carbon fibre tips, to perfectly finish the rear of your M135i.
Valved and non valved explained
- Valved: Retains the use of exhaust valves. Switching drive modes will continue to change your exhaust tone from quieter to louder as before.
- Non valved: Removes the use of exhaust valves. Drive modes will no longer change the exhaust volume. This will not harm the running of the vehicle and the Cobra Sport system is designed with this in mind.
Nforcd recommendation
We have fitted and used this Cobra Sport BMW M135i F40 GPF back race box delete valved exhaust and our customers consistently love the deeper bass, sharper tone and overall build quality. It is a brilliant upgrade if you want a serious M135i exhaust sound while keeping the stock catalyst and GPF.
Professional fitting available
Nforcd offers expert installation in Warwickshire. Request a fitting quote by emailing Sales@nforcd.com.
Common searches and compatibility keywords
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