This system bolts to the EXIT of the standard front pipe (the one with the flex section in it) and runs through to the rear of the vehicle. The system is manufactured from 57mm diameter aluminised mild-steel tubing, and features a single OVAL polished stainless-steel'rolled end' style tailpipe. This Astra 2.0CDTi non-silenced system has a deeper & more'hollow' exhaust tone. This system is manufactured on state on the art CNC bending machines so you can be sure of a perfect fit every time. The image shows the actual Astra Mk6 2.0CDTi non-silenced exhaust system.