It has been two years since Mercedes stopped production for the SLS AMG. It doesn’t seem that long ago, but with the arrival of the AMG GTand its more powerful brothers, the AMG GT S and the AMG GT R, the SLS AMG has ascended into its rightful place as a modern-day classic. That status will live on for a long time and it’s a
big reason why there are still tuners out there who are still building programs for the departed supercar. One of these tuners is RFK Tuning, which went out of its way to build a tuning kit that provided upgrades to various sections of the car, including the 6.3-liter V-8 engine that now puts out 605 horsepower and 498 pound-feet of torque.