The new 2020 Mercedes-AMG GT R Pro has no more power than standard, but weight-reducing carbon fiber and big aero help make it the most hardcore version of the SLS-successor yet.

The new Pro is about six seconds faster around the Ring than the basic version of the GT R (no dash), which shows how much the rest of the car is at work here.

The 4.0-liter twin-turbo V8 remains unchanged with 557 horsepower and 516 lb-ft of torque. What’s new is the carbon fiber chin spoiler, splitter, fender vents, side skirts, rear wing and other rear... appendages? Not sure what you would call these. Winglets? Whatever.

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There are new adjustable coilovers, as well as a carbon fiber torsion bar at the front and spherical bearings in the upper front wishbones.

Add to that is an optional full steel roll cage and four-point belts. The record car had all gold belts, but it’s unclear if you can get your four-points in this most appropriate color.

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All that I find annoying is that AMG isn’t giving us the exact specs on how much weight was reduced in this car, particularly given that it has a carbon roof and carbon brakes standard. Give us the specs.

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