XForce 4" Turbo-Back System — FG/FGX Falcon XR6 Turbo
The top of the range for the turbo Barra, and the one to pick if the car is going to be tuned hard. Full 4" bore the whole way from the turbo, with a 100-cell metallic cat and a straight-through muffler — about as little restriction as you can run and still register as an exhaust system.
On a built car the difference over a 3.5" system shows up where it matters: less drop-off up top, and boost that comes on and stays on.
Specifications
| Fits | Ford FG & FGX Falcon XR6 Turbo Sedan, 2008 onwards |
| Part No. | E4-FG21-TBS |
| System type | Full 4" turbo-back |
| Cat | 100-cell metallic, high flow |
| Muffler | Straight-through |
| Outlet | Twin tip |
| Material | Raw 409 stainless steel |
Tuning: a tune is required to get the most from a 4" system.
