Supersprint Rear Exhaust 100mm Tailpipes - BMW 1 Series F20/F21 M135I/M140I 4 Series (F32 / F33) power gains are achieved and

power gains are achieved and weight reduction realized

growing to an aggressive roar when driven hard but without droning

It provides more stopping power and increased fade resistance over the standard OE materials but retains the good qualities of the road pad i

Once upgraded the power continues to climb leading to a far more linear power delivery

Supersprint Rear Exhaust 100mm Tailpipes - BMW 1 Series F20/F21 M135I/M140I 4 Series (F32 / F33) power gains are achieved andSupersprint 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.