Mercedes | 722.9 Seven Speed | Transmission Software Upgrade | SUVs mercedes-benz-sl-class--230---2007-2011--sl-600-esr9561245 C205 - C43 AMG Coupe

C205 - C43 AMG Coupe

facility in Germany

355 HP @ 6

Rated by RENNtech:               575 HP @ 6

The downpipes can also be installed in conjunction with the 650S or 12C factory exhaust tips

Mercedes | 722.9 Seven Speed | Transmission Software Upgrade | SUVs mercedes-benz-sl-class--230---2007-2011--sl-600-esr9561245 C205 - C43 AMG CoupeRENNtech Transmission Software Upgrade for 722. 9 Mercedes Seven Speed Transmissions for Mercedes AMG SUV Models. With 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. Especially with the newest generation of the Mercedes AMG SUVs, the transmission has been the weak point