GT3.5 round rolled angle steel adopts T304 resonant double-wall stainless steel tip, with 2.25-inch inlet and 7.5-inch length, with 3.50-inch outlet, or without resonator 33NR. the shape and design of stainless steel tail throat are different, so the price difference is relatively large. Some products are just simple exhaust pipes, and there are no complicated patterns and designs inside. After all, this style will be cheaper. Some products have complicated internal structures. From the back, there are various patterns and shapes, which are very beautiful and expensive. The picture shows Jin Hui's giant tail throat, which has various designs and shapes, and is suitable for customers' needs of different models.