APEXi® N1-X Evolution Extreme 304 SS Rear Section Exhaust System with Quad Rear Exit (164-KT06) 1771 launch control or two step

launch control or two step ignition

Raised RPM limiter for manual transmission vehicles

and in most cases the ends of each rail are pre tapped to accept -6 AN or 9/16”x18 fittings for users who want to use custom fuel lines

Dual 3" Cat Back configuration for 4th Gen Chevrolet Silverado/GMC Sierra 6

APEXi® N1-X Evolution Extreme 304 SS Rear Section Exhaust System with Quad Rear Exit (164-KT06) 1771 launch control or two stepN1 X Evolution Extreme 304 SS Rear Section Exhaust System with Quad Rear Exit (164 KT06) by APEXi. Modular design Midpipe and Rear Section can be interchanged with factory exhaust components. Exhaust System Type: Rear Section. Exhaust Tubing Material: 304 SS. Main Tubing Diameter: 2. 56" 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 emphasizes optimum