Downpipe z katalizatorem X Force 100CPSI Audi RS3 2017- 8V HATCH - ESRS317KITB - For Audi RS3 owners that want to achieve peak power and torque output, or that just like their exhaust system fully optimised whilst retaining a catalyst, the XFORCE 4"-3” downpipe delivers. 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. 304 stainless steel Non Polished 4″ – 3″ pipe work Stainless steel flex bellows 100 cell high flow metallic race cat Tunning pipe 3″ to twin oem size adaptor pipe Fitting kit supplied Please note: This product is equipped with a 200 cspi sports catalytic converter which is dedicated for track use only and it may not pass the emission test. Please check if high efficiency catalytic converters can be used on roads in your country. Xforce offers a range of uniquely engineered and designed stainless steel bolt on exhaust systems. Theses exhaust systems bolt directly to existing mounting points making installation easy. They are built to perform well, with materials designed for longevity and like all Xforce exhaust systems they look and sound great! - make it roar!