INVIDIA R400 CAT BACK EXHAUST Invidia's most popular exhaust system. Specifically designed to fill the sound gap between the Q300 and N1 system, the R400 produces a unique, agressive note while minimising harsh cabin noise (particularly at highway speeds). The R400 muffler was designed using years of experience from Invidia's engineers to allow the perfect balance between unrestricted exhaust gas flow and sound dampening. This exhaust system will provides a pronounced exhaust note throughout the entire RPM band even when only installed as a cat-back system. The R400 muffler design also looks great with a race inspired design that will turn heads. The Invidia R400 Exhaust takes quality, performance and looks to a new level. From start to finish the Invidia Exhaust Systems are designed with performance in mind with the exhaust route carefully selected to ensure minimal bends, allowing for an unobstructed exit of exhaust gases with minimal restrictions and turbulence. This will allow for improvements in both horsepower and torque, along with improvements in throttle response with a reduction in turbo lag for turbocharged vehicles. Additionally, you get the reward of an aggressive exhaust note. Piping Diameter: 70mm Piping Thickness: 1.5mm Piping Material: 304 Stainless Steel Piping Finish: Polished Flange Material: Cast 304 Stainless Steel Resonated: Yes Single/Dual Exit: Dual Muffler Style: R400 Tip Quantity: 2 Tip Material: Titanium Tip Finish: Burnt Titanium Tip Style: Rolled Edge Tip Diameter: 101mm Included Hardware: Gaskets Nuts/Bolts NOTE: Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.