The scorpion red power car exhausts are packed with features specifications include designed specifically for the vauxhall astra gtc 14 turbo 2009 current secondary cat back system non resonated includes the following components centre no silencer link pipe rear silencer tail pipe fitting kit pipe diameter 635mmtailpipe evored power valve no british manufactured all scorpion exhausts are hand crafted by scorpion automotive engineers in derbyshire uk guarantee