A popular and inexpensive upgrade for the transmission mount is the installation of the BMW 320i tranny mount.Originally used on the older E21 3-series, it's cylindrical shape deflects less than the mounts found on recent BMWs. Installing the 320i mounts requires very little modification, and it yields significantly less deflection without any additional vibration or otherwise uncomfortable side effect. Testing of the stock E36 M3 tranny mount and the 320i mount showed that the 320i mount deflected 24% less than the E36 M3 version (a good thing). In the effort to find a solution that would yield even greater results, UUC Motorwerks began research the various options.There are replacement aftermarket tranny mount systems which do a notable job of addressing transmission movement, but at the expense of excessive interior cabin vibration. Additionally, such system can cost upwards of a few hundred dollars.Like all UUC Motorwerks products, our goal is to create products which can be used in a daily driver while maintaining the benefits for performance driving. Such is the case with the Tranny Mount Enforcer.The Tranny Mount Enforcer is an add-on piece to the 320i mount which inhibits a noticeable degree of deflection. The Tranny Mount Enforcer is CNC'd from 6061-T6 aluminum.For best results, we recommend using the specially-designed UUC Transmission Mount Bushings which do not require the slight modification to the transmission cross brace that the 320i bushings do.