New Sequential Version Out Soon. No Harness Needed. Manual-Mode=Insane Firm Shift Speeds, No Lag. E55-S55-Cl55-CLS55-CLS55
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Mercedes TCU Tunes For 5G Transmissions
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  • Mercedes Mk-Ultra TCU Tunes
    • W220 S55
    • W211 E55
    • R230 SL55
    • C215 Cl55
    • C219 CLS55
    • C215 CL65 V12
    • V220 S65 V12 – R230 SL65
    • W203 C55
    • C209 CLK55
    • Gear Ratio Service
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    • MK-Ultra Sequential 5G TCU Kit E55/CLS55
    • TCU Upgrade
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    • EGS52 Stock Firmware Files
    • EGS52 File Tuning Service
  • 722.6 Parts
    • 722.6 AMG 240-0106 Valve Body Remanufactured
    • Blue-Top Solenoids
  • Stock Mercedes Tcu’s
    • Stock Mercedes Transmission Control Modules EGS52
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TCU Upgrades

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Best Selling Products

  •
    2003-2006 Mercedes-Benz E55 AMG M113K Mk-Ultra Calibrated TCU
    5.00 out of 5
    $250.00
  • 2003-2007 Mercedes-Benz SL55 AMG M113K Mk-Ultra Calibrated TCU
    5.00 out of 5
    $250.00
  • Mercedes-Benz CLS55 AMG M113K Mk-Ultra Calibrated TCU
    0 out of 5
    $250.00

Latest Products

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    722.6 AMG OEM Stock Speed Shift 240-0106 Valve Body With Bluetop Solenoids
    0 out of 5
    $500.00
  • Stock Replacement Mercedes Transmission Control Modules EGS52
    0 out of 5
    $130.00
  • Sequential Style 5G Transmission Control Kit For M113K Cars E55/CLS55
    0 out of 5
    $429.00

Top Rated products

  •
    2003-2006 Mercedes-Benz E55 AMG M113K Mk-Ultra Calibrated TCU
    5.00 out of 5
    $250.00
  • 2003-2006 Mercedes-Benz S55 M113K Mk-Ultra Calibrated TCU
    5.00 out of 5
    $250.00
  • 2003-2007 Mercedes-Benz SL55 AMG M113K Mk-Ultra Calibrated TCU
    5.00 out of 5
    $250.00

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  • Email: tjmerry@mkultraelectronics.com
  • Working Days/Hours: Mon - Fri / 9:00 AM - 5:00 PM
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    • Main Menu
    • Top Navigation
    • Home
    • Mercedes Mk-Ultra TCU Tunes
      • W220 S55
      • W211 E55
      • R230 SL55
      • C215 Cl55
      • C219 CLS55
      • C215 CL65 V12
      • V220 S65 V12 – R230 SL65
      • W203 C55
      • C209 CLK55
      • Gear Ratio Service
      • Car Not Listed? Click Here
      • MK-Ultra Sequential 5G TCU Kit E55/CLS55
      • TCU Upgrade
    • Mercedes Software
      • EGS52 Stock Firmware Files
      • EGS52 File Tuning Service
    • 722.6 Parts
      • 722.6 AMG 240-0106 Valve Body Remanufactured
      • Blue-Top Solenoids
    • Stock Mercedes Tcu’s
      • Stock Mercedes Transmission Control Modules EGS52
    • 722.6 Technical Information
    • Help & FAQs