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GS 5.4L Boss (FG)

Released late in the life cycle of the Boss engine, the GS 5.4ltr engine still has the potential of its GT and GTP big brothers. Given the right mods, it is a car that offers great bang for buck for Ford fans.

GS 5.4L Boss (FG) Kits:


Stage 1 - 320kw
Released late in the life cycle of the Boss engine, the GS 5.4ltr engine still has the potential of its GT and GTP big brothers. Given the right mods, it is a car that offers great bang for buck for Ford fans.
Stage 2 - 330kw
Released late in the life cycle of the Boss engine, the GS 5.4ltr engine still has the potential of its GT and GTP big brothers. Given the right mods, it is a car that offers great bang for buck for Ford fans.
Stage 3 - 375kw Extreme Kit
Released late in the life cycle of the Boss engine, the GS 5.4ltr engine still has the potential of its GT and GTP big brothers. Given the right mods, it is a car that offers great bang for buck for Ford fans.
Stage 4 - 420kw Extreme Kit
Released late in the life cycle of the Boss engine, the GS 5.4ltr engine still has the potential of its GT and GTP big brothers. Given the right mods, it is a car that offers great bang for buck for Ford fans.