Bilstein B6 HD 05-10 Chevy Cobalt / 07-10 Pontiac G5 Rear 46mm Monotube Shock Absorber Programmers & Chips>Transmission Controllers This tube has built-in resonance

This tube has built-in resonance chambers to catch un-wanted air intake noises

plus it will sound great with an additional V8 muscle car growl

Monster ram is CNC ported to a full 4

Finishing off this exhaust system are dual 4-1/2 IN diameter black 304 stainless steel clamp-on exhaust tips

and a dual resonated mid-pipe provide a deeper sound

Bilstein B6 HD 05-10 Chevy Cobalt / 07-10 Pontiac G5 Rear 46mm Monotube Shock Absorber Programmers & Chips>Transmission Controllers This tube has built-in resonanceBilstein B6 Performance dampers are a performance upgrade to OE dampers designed to be paired with the OE factory spring. These dampers offer application specific valve settings with a monotube design to bring out the best handling performance of a vehicle. Each damper is rigorously tested for quality that meets or exceeds OE standards. B6 Performance dampers will provide improved safety and handling performance with the added benefit of world famous