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Very good sound, quality and looks – an absolute novel product!
Quad Custom Exhaust makes every BMW E82/E88 coupe and convertible look like an M-series M1 - made of high quality stainless steal
4x76mm TailPipes - looks like original M3 / M1
Exhaust is available for the following 1-series BMW E82/ E88 models (stock cars without tow-bar):
- 118d / 120d (N47)
- 123d (N47S) (connecting-pipe here not with clamp - has to be welded)
- 118i / 120i (N43)
- 118i / 120i (N46N)
- 125i (N52N)
- 128i (USA only N51)
- 135i (N54)
- 135i (N55)
Currently this system is available for all listed models above with installation in our garage. These products are also approved for shippment and self-installation in your local and professional garages of your choice!
Here on an 123d and 125i:

Here an 135i with N54 engine:

Here an 125i:

Here an 120d:

Inward rolled stainless steel tailpipes/tips (see pictures). (Some pictures may show the old "cutted tip" version - this version is no longer available).
Here an 135i:




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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