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    Downpipe Kit with 300CPSI Racing catalyst converter for Subaru WRX STI 2007-2018

    made out of high quality stainless steel 1.4301 (SS304)
    complete Ø 76mm (3 " )
    high quality 300CPSI Euro6 standard racing metal catalyst converter
    100% perfect fit, plug and play
    less thermal load on the turbocharger
    more power by reducing back pressure
    significantly more torque
    optional with Ø76mm (3 " ) decat-pipe