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Very good sound, quality and looks – an absolute novel product!
Quad Custom Exhaust makes every BMW E81/E87 coupe and convertible look like an M-series M1 - made of high quality stainless steal
4x76mm Pipes - looks like original M3 / M1
Fits all BMW E81/E87 stock cars without tow-bar.
116i 1.6 N43 / 1.6 N45N / 2.0 N43 / N45
118i N43 / N46N / N46
120i N43 / N46 / N46N
130i N52N / N52
116d N47
118d N47 / M47N2
120d N47 / M47N2
123d N47S
Currently this system is available for all listed models above with installation in our garage - shortly for all these models the exhaust system will be released and approved for shippment and self-installation in your local and professional garages of your choice! The following models are already approved for shipping and mounting in your local garage:
130i N52N / N52
Here on an 130i:


You can choose between inward rolled tips (see pictures here) or normal tips (see pictures in the E82/E88 exhaust product description). Please specify during the order process in the comment field if you prefer "normal" or "rolled" tips.



New: now also available with inward rolled tips (please specify during the order process in the comment field if you prefer "normal" or "rolled" tips).
No bigger modifications have to be made to the car!
With the original M-Technik rear bumber you just need to place our special inserts/diffusors into your bumber. Available in GFK (Fiberglass) and Carbon fiber
These inserts/diffusors can also be bought from us! You can navigate to the rear bumber inserts here (you can choose between real Carbon or Fiberglass and different versions)

Soundfiles:
www.insideperformance.de > Soundfiles
The exhaust stream is equal in all four pipes - very sporty sound.
Installation should be done by a professional garage - installation instructions can be found here
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