If the results achieved by the M division of the Germans at BMW are not very convincing, then you can opt for the tuning packages developed by Romeo Ferraris for the current X5 M and X6 M. The Italian specialists decided to release the first details on their latest tuning kits starring the M versions of X5 and X6.
Sadly, the photo gallery is composed just by one photo revealing the Romeo Ferraris BMW X6 M, a model that gets no major aesthetic improvements, the official press release telling us that a variety of exterior colors are available alongside interior tweaks such as a new leather upholstery and Alcantara.
On the other hand, we have a bunch of official information on the performance tweaks which are pretty impressive. Romeo Ferraris claims that the standard output of 555 horsepower raises to 604 horses due to a revised ECU unit.
If this is not enough, the second stage of tuning which comes with a quad-pipe sport exhaust system and other high performance components squeezes 655 horsepower and 865 Nm of torque from the same standard 4.4-liter V8.