Mercedes 722.9 Seven Speed Transmission Upgrade mercedes-benz-cls-class--218---2015-2018--cls-550-biturbo-esr2270978 RENNtech high performance stainless steel

RENNtech high performance stainless steel braided brake lines

The BOV adapters work perfectly in combination with the RENNtech ECU Upgrade

Our performance package includes our proprietary ECU tune in addition to our full carbon fiber airbox for a gain of +19 HP and +38 TQ over stock

CLASS S LONG (W 221) 450 [2 Filters Required] (HP: 340 | Year: 06 > )

0 (HP: 197 | Year: 06 > 10)

Mercedes 722.9 Seven Speed Transmission Upgrade mercedes-benz-cls-class--218---2015-2018--cls-550-biturbo-esr2270978 RENNtech high performance stainless steelRENNtech Transmission Upgrade for 722. 9 Mercedes Seven Speed Transmissions. 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. This can not be realized with software and only truly be accomplished by an internal mechanical upgrade to the transmission hardware. RENNtech