You wouldn’t say the X6 M is short on power, what with 567 horses and 750Nm of torque, but try telling G-Power that. The tuner has taken the super-fast BMW and made it even faster...

Stage 1 sees the 4.4-litre twin-turbo V8 climb to 641 horses thanks to a software remap or the addition of the Bi-Tronik 5 V1 power module.

Stage 2 uses the Bi-Tronik 5 V2 along with a specially fabricated stainless steel exhaust to increase output to 690 horses.

Stage 3 takes it up to 739 horses by using uprated turbochargers and a bespoke titanium exhaust system, which sheds 23kg off the total weight of the SAV. The tuner also offers a GX6M-RS coilover suspension and 23in Hurricane RR forged alloys.