NEW VERSION IS HERE! Thicker, stronger, better! These V2 turbo dump pipes (also known as a downpipe) are made from sus304 stainless steel pipe with Q235 flanges. They are a 3″ dump pipe for substantially greater flow and more power. Designed to suit the factory caldina turbo (will NOT fit ST185 / ST205 / SW20 – we have another version for those vehicles). Inlet gasket is now included with this new version 2 pipe. We strongly recommend you run some form of flexible joint when installing this to prevent cracking due to flex in your exhaust system. The dump pipe comes flexi-ready, and some fabrication is needed for install.