Maker TOMEI Part Name Expreme Titanium Ti Cat Straight Pipe Part No. 431003 Vehicle Make MITSUBISHI Vehicle LANCER EVOLUTION IX(9)EVO9 Model CT9A Engine Model 4G63 Material (TOMEI / STD) Tomei: Titanium / OEM: Steel Pipe Diameter Tomei: 80mm Pipe Thickness Tomei: 1mm / OEM: 1.5mm Weight Tomei: 0.8kg / OEM: 5.3kg Remark Comes with all nuts, bolts, washers, gaskets and hardware required for installation Remark The flanges are made to OEM specifications, so the straight through pipe is compatible with both OEM and aftermarket exhaust systems Remark Please check for legality in your country as the catalytic convertor has been removed