The scorpion red power car exhausts are packed with features specifications include designed specifically for the vauxhall astra mk45 20 2002 2009 turbo downpipe includes the following components turbo downpipe pipe diameter 635mmtailpipe nared power valve na british manufactured all scorpion exhausts are hand crafted by scorpion automotive engineers in derbyshire uk guarantee all scorpion car products are guaranteed for life fittingsinstructions all scorpion