RennTech R1 Performance Package For Mercedes-Benz C209 CLK 55 AMG

VENDOR: RennTech


All orders will include an AutoTalent window decal


The RennTech R1 Performance Package is the perfect entry level performance upgrade for the C209 CLK 550. 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.

The R1 performance package increases performance to 385HP and 400TQ at the crank, without sacrificing daily driver comfort or reliability and offer huge gains across the entire RPM range. Due to increased power and boost levels, 93 Octane or higher gasoline has to be used with R1 upgraded RennTech vehicles to avoid damage to the engine. This combination that provides noticeable increases horsepower, torque and throttle response across the vehicles entire powerband while still maintaining daily driver reliability.  


  • Long-lasting and driver reliability
  • Significant gains in horsepower
  • Increases the performance
  • Significant gains torque 
  • Increases horsepower
  • Increases throttle response
  • Increasing the engine's rev limiter
  • Incredible performance gains
  • RennTech ECU Upgrade
  • RennTech Full Carbon Fiber Airbox

      Stock Performance:

      • 362 HP @ 5750 RPM; 378 LB-FT @ 4000 RPM

      Modified Performance:

      • 385 HP @ 5500 RPM; 400 LB-FT @ 3000 RPM

      Vehicle Fitment:    

      • 2004 Mercedes-Benz C209 CLK 55 AMG
      • 2005 Mercedes-Benz C209 CLK 55 AMG
      • 2006 Mercedes-Benz C209 CLK 55 AMG
      • 2007 Mercedes-Benz C209 CLK 55 AMG
      • 2008 Mercedes-Benz C209 CLK 55 AMG
      • 2009 Mercedes-Benz C209 CLK 55 AMG
      • 2010 Mercedes-Benz C209 CLK 55 AMG


                                Images are for representation purpose only and may differ depending on application.