Borla 16 Chevy Camaro 6.2L Atak Rear Section Exhaust w/o Dual Mode ValvesBorla 16 Chevy Camaro 6. 2L Atak Rear Section Exhaust w o Dual Mode Valves This system has dual tips and will fit vehicles equipped with Dual Mode Exhaust (NPP) valves but it does NOT include Dual Mode valves. It may be used with the dual tip lower bumper cover to convert a single, split rear exit to a dual split rear exit. It features 4" polished T 304 stainless steel tips. Adapter kit 60605 can be used to add NPP valves this Axle Back system. The