Supersprint Rear Exhaust 100mm Tailpipes - BMW 1 Series F20/F21 M135I/M140I 4 Series (F32 / F33) We have various stage maps

We have various stage maps available for those with pre-existing modifications

Additional 100-120 hp on a stock vehicle

and now F87 chassis

These situations are often subjective to the driver

power gains are achieved and weight reduction realized

Supersprint Rear Exhaust 100mm Tailpipes - BMW 1 Series F20/F21 M135I/M140I 4 Series (F32 / F33) We have various stage mapsSupersprint 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.