Układ wydechowy X Force z systemem Varex Subaru Impreza 1994-2007 WRX-STI GC GD GG stal nierdzewna - E4-SW05VMK5-CBS - Varex™ mufflers use patented technology to combine both the design of the stock muffler and the performance muffler into one single compact unit. A sophisticated butterfly valve mechanism is implemented to redirect the exhaust gas flow and vary between the two. For higher sound level, the exhaust flows are directed through the opening path and produce maximum power with a robust sound level (or the “sports car note”) and near-zero resistance.3″ Pipe work Raw 409 stainless steel Hot dog centre resonator Polished Varex rear muffler Twin 80mm tip outlet Fits manual vehicles only Some models require E4-SW05-C1 connecting pipe to be ordered for bolt on application with our cat back system, when fitting to vehicle with stand alone cat converter.