R1 Performance Package | W220 | S 55 AMG | 372 HP / 411 LB-FT | 5.5L NA V8 | M113

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R1 Performance Package | W220 | S 55 AMG | 372 HP / 411 LB-FT | 5.5L NA V8 | M113R1 Performance Package for 220 S 55 AMG. Includes ECU Upgrade and Carbon Fiber Air Box. Up to 372HP and 411 LB FT. The R1 performance package for the Mercedes 55 series engine includes our proprietary ECU upgrade in addition to our full carbon fiber airbox upgrade which offers a larger volume of incoming air for better engine breathing and improved cylinder filling. This combination that provides noticeable increases horsepower, torque and throttle

it’s a memorable driving experience

to remedy the factory weaknesses

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4 at 6260 rpm + 19

The Akrapovič Slip-On exhaust system is made of our proprietary titanium and consists of completely newly developed

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giving you complete control over the exhaust sound regardless of speed

Stock Axle Shaft OD= 29

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This increase in flow dramatically removes heat from the incoming air

415HP @ 7600 RPM