The scorpion red power car exhausts are packed with features specifications include designed specifically for the vauxhall astra mk5 vxr 2005 2009 cat back system non resonated includes the following components adaptor sleeve front no silencer link pipe rear silencer 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 all scorpion ca