The arrival of the next-generation Mercedes-AMG E63 is right around the corner but before the new model enters the scene, the outgoing model is still going strong, holding the fort until the replacement arrives. But that day hasn’t come yet, so a tuner like Revozport is more than happy to introduce a new tuning program for the current model. The kit is called the RZE-640 and it packs an engine upgrade, among other things, that increases the car’s power to as much as 635 horsepower and about 600 pound-feet of torque.

In addition to the hefty increase in power, Revozport is also offering its new RZE-640 aerodynamic that’s made up of a handful of new components, all of which are made entirely from carbon fiber. Even the car’s interior was the subject of an upgrade or two and while there are no offerings of a new set of wheels, the kit itself already addresses some of the most important sections of the AMG E63.

Truth be told, there are a lot of aftermarket programs available for the Mercedes-AMG E63. Some, like Posaidon’s RS850+ kit, promise a power increase that puts the car’s output north of 1,000 horsepower. Others, like Performmaster’s program, puts its overall focus on the engine department with a hefty upgrade of its own. Then there’s Revozport, which has a rounded kit that provides all-around improvements to the AMG E63.

Continue after the jump to read the full review.

Exterior

Revozport’s exterior upgrades for the AMG E63 is made up of its very own RZE-640 aerodynamic kit. The photos show the extent of the modifications, but what’s not as clear is the fact that the components – the front splitter, side skirts, trunk spoiler, and rear diffuser – are all made from carbon fiber. The extra slice of aggressiveness gives the AMG E63 a more purposeful look and of course, the benefits of increased downforce throughout the car is always a good thing.

Interior

The only upgrades made to the interior of the AMG E63 are the aluminum paddle shifters.

Drivetrain

This is where Revozport focused all of its attention and while the results don’t necessarily give the AMG E63 S supercar-like power and performance capabilities, the upgrades do help in giving the sedan plenty of next-level mechanical improvements. At the heart of the engine upgrades is a remapped engine control unit, which helps push the output of the sedan’s 5.5-liter biturbo V-8 engine from the standard 557 horsepower and 531 pound-feet of torque to 635 horsepower.

Granted, Revozport didn’t mention the torque gains from the remapped ECU, but it should be around the neighborhood of 600 pound-feet of twist. That should allow the sedan to cover ground to 60 mph a little bit faster than the 3.6 seconds it takes the standard model to do it. Once again, the tuner didn’t come out with a number but somewhere in the 3.4-second range should be attainable and a top speed in the vicinity of 190 mph, provided that Revozport also took out the car’s electronic speed limiter.

A similar program for the “regular” variant of the AMG E63 nets an output of 602 horsepower.

Pricing

The total cost of the upgrade, minus the air intake system since it’s not posted on Revozport’s website, is $9,260. For a more specific breakdown of the prices, refer to the table below.

Competition

Mercedes-AMG E63 RS850 by Posaidon

If there’s a program for the Mercedes-AMG E63 that really pulled out all the stops on the car, it has to be Posaidon. Introduced in July 2016, Poseidon’s RS850 program has the biggest power gain of any tuning kit we’ve seen for the E63 in recent years. The German tuner added a pair of larger turbochargers, installed new intercoolers, and fitted a bespoke carbon fiber-encased intake system among the many modifications made to the E63’s mechanicals. The result is an output of 1,020 horsepower and 1,032 pound-feet of torque, good enough to shoot the E63 straight from an idle position to 60 mph in just 2.8 seconds to go with an electronically limited top speed of 217 mph.

Read more about the Mercedes-AMG E63 RS850 by Posaidon here.

Mercedes-AMG E63 by Performmaster

Performmaster’s tuning program for the AMG E63 doesn’t promise the kind of power gains that Posaidon is offering. But it is right up there with what RevoZport was able to come up with. The highlight is the engine upgrade and Performmaster’s program centers on its all-purpose PEC Tuning-Module that is actually compatible across the entire range of AMG models. In the case of the E63, Performmaster was able to take the sedan’s 5.5-liter biturbo V-8 engine and squeeze out 705 horsepower and 737 pound-feet of torque out of it. That helps the sedan cut its 0-to-60-mph sprint time from 3.6 seconds to around 3.3 seconds to go with a new top speed of 199 mph.

Find out more about the Mercedes-AMG E63 by Performmaster here.

Conclusion

Revozport's RZ-640 kit for the Mercedes-AMG E63 doesn't come close to approaching what Posaidon did with its own program. But that's why this particular kit is so appealing because not everyone would want to have over 1,000 horsepower on their E63's. What Revozport is offering is something that's a lot more grounded and should satisfy the majority of E63 owners who prefer significant modifications to their sedans without turning the car into a rocket on four wheels.