The Scorpion Red Power Car Exhausts are packed with features... Specifications Include: Designed Specifically for the BMW Z4 E85 3.0Si & 2.5Si/E86 3.0Si - 2006 - 2009 Scorpion Car Exhaust Cat-Back System (Resonated) Daytona includes the following components: L/H front pipe R/H front pipe Centre silencer L/H link pipe R/H link pipe Rear silencer Pipe Diameter - 50.8 mm (2") Fits To - OEM & Scorpion systems Red Power - Built to stir your soul! Warranty - All Scorpion exhausts come with a lifetime warranty British Manufactured - All Scorpion exhausts are hand crafted by Scorpion automotive engineers in Derbyshire, UK Fittings/Instructions - All Scorpion products are supplied with everything needed to fit and ride, along with parts drawings and picture instructions where necessary