Invidia Single N1 Cat Back Exhaust - Subaru WRX 09-21/STI 08-21/FXT 08-18 (Sedan Only) Denso Audi - S4 - B8

Audi - S4 - B8 - 2007 - 2015 - Rear - Without Electronic Suspension

BR INCL TURBO 4/6CYL (Reduces roll/bump steer - essential for lowered cars)

Ideal for fuel cells with standard-fill systems using direct fill or remote fill necks

Especially in forced induction (supercharged or turbo)

This will provide you with a leak-free lifetime solution -10AN breather outlet

Invidia Single N1 Cat Back Exhaust - Subaru WRX 09-21/STI 08-21/FXT 08-18 (Sedan Only) Denso Audi - S4 - B8INVIDIA N1 CAT BACK EXHAUST Full power. Full flow. Full volume. Blending performance and price, the Invidia N1 Exhaust is a modern interpretation of the classic N1 racing style exhaust. Invidia N1 Exhaust Systems feature cannon style mufflers for maximum flow and minimised back pressure, resulting in significant mid to top end power gains. From start to finish the Invidia N1 Exhaust Systems are designed with performance in mind with the exhaust route