The GReddy Racing Titanium lines are true race inspired exhaust system for the road. Based originally on our popular JDM Power Extreme II style, we have evolved the different premium systems to include different styles to best match the vehicle and owner.? In general all GReddy Titanium exhaust systems are very free flowing, having large diameter piping and minimal bends. As a true PRO system, the outer construction is full Titanium, from the flanges to the mandrel-bent piping, to the muffler canister and flamed outer-curled Tip. Being full Titanium, many of these cat-back systems can save as much as of weight of the original OEM exhaust.