RENNtech | ECU+ Upgrade | G550 4x4² | W463 | 523 HP / 583 LB-FT | 4.0L BiTurbo V8 | M176 mercedes-benz-sl-class--232---2022-present--sl-43-amg-biturbo-esr7590087 The RENNtech AMG GT63 Side

The RENNtech AMG GT63 Side Skirts feature unique design elements with strategically formed surfacing and a shaped to improve airflow while enhancing the AMG GT63's dynamic aesthetics

Installation requires no modifications to the trunk lid or body work and installs using 3M double sided automotive adhesive strips

Standard color anodized red

RENNtech’s Exhaust Valve Module (EVM) allows you to open the exhaust valves 100% at all times

Once the acrylic coating is cured

RENNtech | ECU+ Upgrade | G550 4x4² | W463 | 523 HP / 583 LB-FT | 4.0L BiTurbo V8 | M176 mercedes-benz-sl-class--232---2022-present--sl-43-amg-biturbo-esr7590087 The RENNtech AMG GT63 SideECU+ Upgrade 523HP 582TQ Gains: +102HP +128TQ RENNtech tuning products are certified to meet CARB standards in all 50 States. RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to