The front splitter is constructed from pre-pregnated carbon fiber with a matte or glossy twill finish. Pre-pregnated carbon fiber ensures maximum strength and stiffness with minimal weight by avoiding excess resin during the manufacturing process. The carbon fiber sheet is then water cut to our drawings to ensure a perfect fit with your vehicle. It is stiff enough for high speeds yet flexible enough to take a beating. Should the splitter take too much damage, replacement splitter sheets are available. The two front diffusers are also created from carbon fiber formed to fit nicely on the GT4.