Redback Dual Exit Rear Muffler Delete Pipe for Holden Commodore 5.7L V8 VT VX VY VZ SedansRedback rear muffler delete with twin tail pipe exit for Commodore 5. 7L V8 VT VX VY VZ LS1 and VZ V6 or Supercharged Engines. Sedans with independent rear suspension (IRS). Features and Benefits: Australian Designed and Made Mandrel Bent ACMS Pipe Work 10mm Laser Cut Flange Plates Coated with Premium Heat Resistant Paint Complete Bolt on Will not suit with standard exhaust systems. For Redback centre sections to form a cat back exhaust see: STR130