The scorpion red power car exhausts are packed with features specifications include designed specifically for the volkswagen polo gti 18t 9n3 2006 2011 turbo downpipe with high flow sports catalyst includes the following components turbo downpipe high flow sports catalyst section fitting kit pipe diameter 635 mm 25 fits to oem scorpion systems ec appoved no british manufactured all scorpion exhausts are hand crafted by scorpion automotive engin