Supersprint Rear Exhaust 100mm Tailpipes - BMW 1 Series F20/F21 M135I/M140I 4 Series (F32 / F33) Additional 100-120 hp on a

Additional 100-120 hp on a stock vehicle

the hood convinces on the whole line

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

Furthermore

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

Supersprint Rear Exhaust 100mm Tailpipes - BMW 1 Series F20/F21 M135I/M140I 4 Series (F32 / F33) Additional 100-120 hp on aSupersprint 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.