Perfect fit and gorgeous quality
From Rick Castleberry of Montgomery, Alaska on 3/27/2017.

Much lighter and looks awesome, is slightly more loud but once it's broken in will drop down in DB,s The exhaust note is right on, no decernable drone and I haven't installed my dynomat yet so I'm looking forward to its final outcome.
UUC Rocks!

system u exhaust
From bmw_seattle of Seattle, Washington on 4/1/2012.

Great sounding!! noticable HP gain! a must do!

system U
From Altin Ajdini of Danbury, Connecticut on 11/30/2007.

I bought it last week on Friday and had the system U installed not even a week later. My 93 325i with 97 M3 transmission sounds better than my friends M3 with a Borla. System U ROCKSS