Obtain the most aggressive rear-end appearance for your 2012-2018 CLS63 with this RW Carbon Renn Style Carbon Fiber Rear Diffuser. Our CLS63 rear diffuser incorporates aggressive carbon fiber styling for the rear without a super-hefty price tag. Best of all this CLS63 diffuser takes the place of your existing plastic diffuser which will re-use some OEM mounting locations and create a more secure fit. We finish all of these carbon fiber diffusers with a clear coat which makes them easy to clean and allows them to stand up to the elements. The rear bumper will need to be removed in order to properly install this diffuser so we recommend having a local shop do the install for you. Whether you’re looking for that one unique exterior piece or already have a carbon exterior theme, our Renn style Carbon Fiber Rear Diffuser is an awesome upgrade for your W218 CLS63.