The new Lexus IS250 follows in the footsteps of it s IS lineage and does not disappoint with it s astounding performance and handling. The 2.5L V6 engine screams through the powerband effortlessly with it s strong mid-range and impressive high-end performance. Unfortunately, being a Luxury car, Lexus had to tone down the car a bit to make it more civilized and conservative for it s target audience. This takes away from the cars full potential. For this reason, Megan Racing has developed the full exhaust system for the new IS250. The product that you are currently viewing is the Header system for the IS250 which also delete the Catalytic Converters. By replacing the OEM manifolds and catalytic converters, you are replacing the most restrictive part of your vehicles exhaust system and allowing the engine (which is basically a pump) to operate and flow more efficiently. This gives you more torque, horsepower, quicker revs and increased fuel economy. Constructed of Polished T-304 Stainless Steel and showcar quality welds, this well crafted piece is perfect for the enthusiast that is looking for both looks and performance. The header for this car is extremely difficult to install, proffesional installation is REQUIRED. WILL NOT FIT THE AWD/4WD IS250. - RWD Only - Equal-Length Primaries - 1.75" Primary Tubes / 2.25" Collectors - 4-Piece Design to aid with installation. - Includes 2 Adapters to change the route of the Dipstick.