These turbo dump pipes (also known as a downpipe) are made from sus304 stainless steel. They are a 3″ dump pipe for substantially greater flow and more power. The flanges are thick so they will not bend or warp. Supplied with factory location EGO sensor ports as well as all gaskets and bolts. Suit CT26 or CT20b turbos on various 3S-GTE engines. They will NOT filt the ST215 caldina – however we do have another dump pipe specifically for those vehicles. SW20 ST185 ST205 MR2 and Celica.