RennTech R3 Performance Package For Mercedes-Benz C209 CLK 63 AMG

VENDOR: RennTech


All orders will include an AutoTalent window decal


The RennTech R3 Performance Package is the perfect entry level performance upgrade for the CLK 63 AMG. RennTech package 3 includes everything found in our performance package 2 plus our stainless steel long tube headers for more performance and sound, our 100% locking limited slip differential to improve handling and traction in addition to our transmission performance upgrade.

The R3 performance package increases performance to 574HP and 543TQ 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 R2 upgraded RennTech vehicles to avoid damage to the engine. States known for poor fuel quality have to be supplied with a lower power setup.


  • Gains up to +84HP & +78TQ
  • 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
  • Full Carbon Fiber Airbox
  • 82mm Throttle Body Kit
  • Stainless Steel Long Tube Headers
  • 100% Locking Limited Slip Differential
  • Transmission Upgrade

      Stock Performance:

      • 478 HP @ 6800 RPM; 465 LB-FT @ 5000 RPM

      Modified Performance:

      • 574 HP @ 6800 RPM; 543 LB-FT @ 5200 RPM

      Vehicle Fitment:    

      • 2004 Mercedes-Benz C209 CLK 63 AMG
      • 2005 Mercedes-Benz C209 CLK 63 AMG
      • 2006 Mercedes-Benz C209 CLK 63 AMG
      • 2007 Mercedes-Benz C209 CLK 63 AMG
      • 2008 Mercedes-Benz C209 CLK 63 AMG
      • 2009 Mercedes-Benz C209 CLK 63 AMG
      • 2010 Mercedes-Benz C209 CLK 63 AMG


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