Street Coilover Kit (Inox) for Audi A4 B9 Avant (8W)Street Coilover Kit (Inox) for Audi A4 B9 Avant (8W). The Street series suspension is the default configuration of MTS Technik engineers, it guarantees a wide range of lowering and a balance between comfort and stiffness. Suitable for the following engine(s) only: 2. 0 TDI quattro 2. 0 TFSI quattro 3. 0 TDI quattro 40 TFSI Mild Hybrid quattro 45 TFSI Mild Hybrid quattro 50 TDI quattro MTS Product SKU: XMTSGWAU58