Alfa Romeo 4C Performance Exhaust Muffled, AL4C.03.10RA for Alfa Romeo Alfa Romeo 4C ECE Valved Exhaust + Carbon Fiber Diffuser (CES3) Best Exhaust Tubi Style Alfa Romeo 4C quad tip exhaust with ExCU and ALFA ROMEO 4C 3'' Modular exhaust system Dual center out resonated Carbon Fiber Alfa Romeo 4C exhaust manifold cooling duct. Demand the Best. Demand Capristo. Capristo Exhaust Systems are engineered and manufactured exclusively at our factory in Sundern, Germany, utilizing advanced 3D laser scanning, CAD design, digital prototyping, and CNC bending milling. Capristo's bespoke Carbon Fiber is engineered and manufactured exclusively at our factory in Sundern, Germany, utilizing advanced 3D laser scanning, CAD design, digital prototyping, and an artistic focus on subtly elevating the aesthetic while maintaining a cohesive design. Technical Highlights: 100% Made in Sundern, Germany Highest Grade T309 (1. 4828) Stainless Steel; similar resonance properties to Inconel, notably used in F1 Proprietary Valves Manufactured by Capristo Premium Catalytic Substrates for Peak Performance Patented Reinforced Design to Eliminate Resonance Manually TIG Welded by Capristo Craftsmen Hand Polished to a Mirror Finish Post Weld Highest Grade Type L Carbon Fiber Weave (OEM Ferrari) Hand Applied Premium German Clear Coating Completely Hand Laid Prepreg Process (No Fiberglass) Proprietary House Cut Billet Steel Molds Cured in Maroso SRL (Italian built) Autoclaves CES3 EVCU1 Installation User Manual