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especially in the most-used middle range
Supersprint Rear exhaust OO70 STEEL 409
Performance can be further increased with the addition of the optional downpipes
The engine found in the Z4 30i respond well to the right type of ECU software
but beyond that the power begins to fall
Supersprint Rear Exhaust 100mm Tailpipes - BMW 2 Series F23 M240I F30 especially in the most-used middleSupersprint Rear exhaust right O100 left O100 Fitting this components will remove the electrical bypass valve present on the OEM muffler. This doesn't involve any electronic, performance or sound issue. Unlike the stock muffler, this exhaust has a perfectly symmetrical separation of the gas between left and right side. The 100mm tips don't need any trimming of the valances. They are available in matte black, polished black and satin silver on request.