This Exhaust valve System is specifically designed to replace/upgrade the oem factory valve housing & made to enhance the performance and sound.

3" bore I.D 

fits : bmw 4 series F32 Coupe/ F33 Convertible/ F36 gran coupe

F32 - COUPE

+428i N20

+428i N26

+428iX N20

+428iX N26

+430i B48

+430iX B48

+435i N55

+435iX N55

+440i B58

+440iX B58

F33 - Convertible

+428i N20

+428i N26

+428iX N20

+428iX N26

+430i B48

+430iX B48

+435i N55

+435iX N55

+440i B58

+440iX B58

F36 -  Gran coupe

+428i N20

+428i N26

+428iX N20

+428iX N26

+430i B48

+430iX B48

+435i N55

+435iX N55

+440i B58

+440iX B58

professional fitting is advised

listing is for 1 unit only 

This listing includes steel housing and upper plate as pictured 

(does not include fitting spring, plastic housing and fixing bolts.)