APEXi® N1-X Evolution Extreme 304 SS Header-Back Exhaust System with Quad Rear Exit (164KT204) 4023 Injen inspection badge allows you

Injen inspection badge allows you to check the condition of your air filter

0" Base x 5

Performance Exhaust features a bespoke x-pipe to deliver maximum performance and desired exotic tone

Your GTI will be planted with a minimal impact on comfort

more aggressive exhaust note

APEXi® N1-X Evolution Extreme 304 SS Header-Back Exhaust System with Quad Rear Exit (164KT204) 4023 Injen inspection badge allows youN1 X Evolution Extreme 304 SS Header Back Exhaust System with Quad Rear Exit (164KT204) by APEXi. Modular design Midpipe and Rear Section can be interchanged with factory exhaust components. With Resonator. Exhaust System Type: Header Back. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 2. 38" x2 to 1. 97" x4. Exhaust System Sound: Aggressive Loud. The N1 Evolution Extreme is based on the proven performance basics of the N1 muffler which