The Bilstein B12 Pro-Kit suspension kit for 2009 Audi TT Quattro Base is a complete front-and-rear package that pairs Bilstein B8 Performance Plus dampers with Eibach Pro‑Kit springs to deliver fixed, moderate lowering. Tuned per application for balanced ride and handling, it lowers roughly 24–40mm depending on fitment and uses progressive springs for precise response and predictable control.
Bilstein B12 2009 Audi TT Quattro Base Front and Rear Suspension Kit