The scorpion red power car exhausts are packed with features specifications include designed specifically for the vauxhall astra mk5 hatchsporthatch 2005 2009 rear silencer pipe diameter 635mmtailpipe evored power valve no 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 products are supplied with everything