RENNtech | Carbon Fiber Bumperette Delete | CLS | C257Carbon Fiber Bumperette Delete for 2019+ CLS AMG 53 Improve the looks of your CLS AMG 53 with RENNtechs carbon fiber rear bumper insert. Designed in house by RENNtech the bumper insert removes the North American spec bumperettes and follows the lines of the AMG 53 for a factory finish look. The Euro Style Bumper Insert is easy to install and uses factory fasteners in the existing holes of the OEM part. The part comes in standard primer or black paint,