The Milltek Sport Primary Cat-Back range replaces all OEM exhaust components after the primary catalyst assemblies and removes the secondary catalysts. This creates a freer flowing system with improved sound and throttle response. - Replaces all OEM parts after the primary catalyst assemblies - Removes secondary catalysts for increased flow - Improved exhaust sound and throttle response Specifications: - Pipe Diameter: 63.50 - Race Product: Yes - EMarked: No Kit comes with: - Over-Pipe - MSSUB164 - Centre Silencer Delete Pipe - MSSUB166R - Rear Silencer (no tips) - MSSUB167 - Silencer Outlet Pipes - MSSUB168 - Burnt Titanium GT (round) 115 Exhaust Tip, Standard - MSTIP154 - Secondary Catalyst Bypass Pipe - MSSUB165 Vehicle Compatibility: - 2012-2016 Scion FR-S 2.0-litre - 2012-2021 Subaru BRZ 2.0-litre