Introducing the new High Flow Precats (HFPCs®) for the 2nd Generation of J-series engines. Completely designed using 3D CAD and CMM, the transition from to high flow cat is made from precision casted 304 stainless steel. This allows for optimum turbulence free flow with no sacrifice in strength. The castings are no thinner than 5mm at their thinnest point. We are confident that the HFPCs® can handle any abuse without cracking.