Having already impressed us with its initial tuning for the Mercedes-AMG GT S, which we might add saw the car creep into the 10s over the quarter mile, America’s Renntech used the recent SEMA show to announce a new round of upgrades for the stunning sports car.

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Tuning firms will do whatever they can to extract every last bit of performance possible—it's their nature. Nevertheless, what Renntech has managed with the GT S in the short time that the car has been on sale is impressive.

Previewed on the GT S presented at SEMA are a range of upgrades Renntech will offer for the car through a new series called the R-Performance Line. Three stages have already been announced: R1, R2 and R3.

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We still don’t have all the details but some of the upgrades we can expect include ECU tuning, coil-over suspension, high-flow exhaust systems and aero mods. The latter will include a custom front splitter, rocker panels, a rear diffuser and an adjustable rear wing.

Stay tuned for the all-important specs as Renntech’s development of the GT S continues.


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