Mercedes-AMG GT R Gets A Massive Power Upgrade

Tuning

Can’t wait for the Mercedes-AMG GT Black Series to arrive? Buy this modified GT R instead.

With a twin-turbocharged 4.0-liter V8 engine producing a hefty 577 horsepower and 516 lb-ft of torque, few would argue that the . This setup rockets the GT R from 0-62 mph in 3.6 seconds and on to a top speed of 198 mph. Mercedes-AMG clearly thinks there’s still room for improvement, though.

Next year, the with yet more power and some aero upgrades. If, however, you can’t wait for the new Black Series to arrive, G-Power has given the current GT R a significant upgrade in the power department.

G-Power is offering no less than four different tuning packages that increase the V8’s output. Impressively, the range-topping variant extracts 789 hp and 627 lb-ft of torque from the V8 unit. This impressive upgrade is achieved by a combination of the Performance Software V4 and several hardware modifications including a fuel pump, weight-optimized forged pistons with reduced compression, modified turbochargers with larger turbine and compressor wheels, CNC-optimized housings, and enhanced compressor turbine blades.

The tuner also installs a new intake system with sports air filters and downpipes with sports catalytic converters before reinforcing the seven-speed dual-clutch automatic transmission to help the modified AMG GT R cope with the extra muscle.

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If 789 hp is too much power for you to handle, G-Power also offers the Performance Software V3 combined with the same hardware modifications to produce 740 hp and 590 lb-ft of torque. Alternatively, the Performance Software V2 increases the 4.0-liter V8’s output to 681 hp and 568 lb-ft of torque with the help of flow-optimized downpipes.

Finally, the entry-level Performance Software V1 packs 641 hp and 553 lb-ft of torque, which is still a significant upgrade over the standard car. Each upgrade also comes with Hurricane RR forged aluminum wheels with 275/30 ZR20 Michelin tires at the front and 305/25 ZR21 rubber at the rear.

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