Owners that want to achieve peak power and torque output, or that just like their exhaust system fully optimised whilst retaining a catalyst, the. Featuring 304-grade stainless steel pipework, the larger bore downpipe also includes a high-flow 100-cell catalyst and stainless steel flexi section to aid installation and ensure reliability. Includes all required adaptors to fit to either an OE exhaust system, or an XFORCE cat-back exhaust. 100 cell high flow metallic race cat.To twin oem size adaptor pipe. If you require your parts quickly then please check stock before ordering to avoid any unexpected lead time.