Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality.This Astra GSI performance exhaust is made in 3"/76.2mm pipework and fit from the catalytic converter section backwards (Cat-back) these exhausts replace the centre and rear sections.The resonated exhaust includes the centre silencer and has a subtle but sporty tone. This exhaust however, is also available as a non-resonated version which is a louder option as it excludes the centre silencer and therefore, has a sportier exhaust note. All relevant fittings and gaskets are supplied.