Muffler set (sus φ90x4tip)
Part no.:
   4101-32013/stainless tail tips
   4101-32013C/carbon tail tips
Application: G20 320i, G22 420i
   B48B20A
Discription:

Material: stainless steel（SUS304）
Main pipe: φ70
Tail pipe: φ90mm / 4 tip
Contents: rear silencer
Installation: Replacing the factory exhaust with this product.
Note:Some OEM parts are required for installation
For G20/21
  #51 12 8 069 391 or 3DDesign diffuser
  #51 12 8 079 607
For G22
  #51 12 9 854 828 or 3DDesign diffuser
  #51 12 8 075 842
ForG20/21/22
  #51 71 8 091 107

Control valve: Not available

Approved: JQR (Meet Japanese standard)

Noise level for reference
(It might be different depending on the condition)

88dB at 3750 rpm