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GT, GTP,GS & XR8 »

XR8 5.4L BOSS(BA/BF)

XR8 5.4L BOSS(BA/BF) Kits:

Stage 1 - 280kw
The 260kw, then 290kw Boss engine powered the XR8 against the arguably superior XR6 Turbo. Again, when combined with the right mods the XR8 could really perform and sound a lot better to boot!
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Stage 2 - 300kw
The 260kw, then 290kw Boss engine powered the XR8 against the arguably superior XR6 Turbo. Again, when combined with the right mods the XR8 could really perform and sound a lot better to boot!
Stage 3 - 315kw
The 260kw, then 290kw Boss engine powered the XR8 against the arguably superior XR6 Turbo. Again, when combined with the right mods the XR8 could really perform and sound a lot better to boot!