Muffler set (sus φ90x4tip)
Part no.:
4101-32014（stainless）
4101-32014C（carbon）
Application: G20/G21 M340i B58B30B
Discription:

Material: stainless steel（SUS304）
Main pipe: φ7mmx2
Tail pipe: φ90mm / 4 tip
Contents: rear silencer
Installation: Replacing the factory exhaust with this product.
Control valve: Available.

Approved: JQR (Meet Japanese standard)

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

85dB at 4350 rpm