Our exhaust systems are designed and manufactured to enhance the sound, appearance and most importantly, the performance of your vehicle. All systems are designed in house using the OEM mounting points to ensure smooth fitment every time. ---Full TIG welding for strength and durability ---2.5" Bore throughout with twin 3.5" tailpipes ---Designed to be a direct replacement for the stock system ---Manufactured from mandrel bent T304 grade stainless steel ---Engineered to improve throttle response and increase power and torque across the entire RPM range Compatible with: Mini Clubman Cooper S R55 2007-2014 models.