RennTech Five Speed Transmission Upgrade For Mercedes-Benz C209 CLK 550

VENDOR: RennTech

SKU: 27.722.6.V8

All orders will include an AutoTalent window decal


RennTech Five Speed Transmission increased engine performance it becomes necessary to further improve the drive line components, most importantly the transmission in order to ensure maximum power is transmitted to the drive wheels without transmission slippage. This can not be realized with software and only truly be accomplished by an internal mechanical upgrade to the transmission hardware. Renntech is the foremost authority on transmission upgrades and has done countless rebuild and upgrades for the most demanding dealers and clients for over 21 years.

RennTech 722.6 Five Speed transmission upgrade consists of a mechanical upgrade to the transmission clutch packs. This allows us the ability to maximize the amount of friction materials contained within the transmission and in turn, the amount of power which can be transmitted through each forward gear. During final assembly the transmission also receives all new gaskets, seals, o-rings, electrical connectors as well as a new transmission pan filter.

RennTech upgrade leads to improved shift response, shift timing, increased torque handling capabilities and greater drivability under extreme conditions without sacrificing around town comfort.


Renntech Transmission Upgrades can only be performed at the Renntech HQ in Stuart, FL. Removal, Upgrade and Installation have to be performed In-House.


  • Maximum power is transmitted to the drive wheels
  • Consists of a mechanical upgrade 
  • Mechanical upgrade to the transmission clutch packs
  • Improved shift response,

    Vehicle Fitment:    

    • 2004 Mercedes-Benz C209 CLK 550
    • 2005 Mercedes-Benz C209 CLK 550
    • 2006 Mercedes-Benz C209 CLK 550
    • 2007 Mercedes-Benz C209 CLK 550
    • 2008 Mercedes-Benz C209 CLK 550
    • 2009 Mercedes-Benz C209 CLK 550
    • 2010 Mercedes-Benz C209 CLK 550


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