Improve chassis rigidity and sharpen the feel of the 2008-2013 BMW M3 E90/E92/E93 with the Dinan Carbon Fiber Strut Tower Braces. Built from aerospace-quality aluminum and carbon fiber, the braces use forged aluminum ends and mount in the factory locations for a clean, direct installation. The rigid carbon fiber structure helps tie the front strut towers together while complementing Dinan's carbon fiber intake finish. Designed to work with stock components or Dinan suspension systems. Part number: D180-0011.