Vauxhall Astra Mk3 Hatch Sportex (91-95) Exhaust System Single 4. This well engineered performance exhaust fits as a direct replacement for the original part on all Astra Mk3 3 door and 5 door hatch models that use the single mounting point on the rear silencer (up to about 1996). The Sportex systems and tailboxes are manufactured from aluminised mild steel with polished T304 stainless steel tailpipes.The rear silencer is of the straight through absorption design giving a terrific deep exhaust note and this system comes with the Sportex Race Tube centre section with no silencer for the authentic competition car sound. All Sportex tailboxes and systems are now made on state on the art CNC bending machines so you can be sure of a perfect fit every time. When ordering a Sportex exhaust please send the following information with your order.