EBC 17 21 Mercedes Benz C43 AMG (W205) 4Matic 3.0TT Bluestuff Rear Brake Pads Vordruck Vollmacht Kfz Abmeldung. Bluestuff NDX is a high friction sport and race material that can be used for aggressive street driving and certain types of track use. The material has had much success on the track with quality aftermarket calipers (Multi piston systems with better release and cooling and larger rotors) and limited success with street based calipers where pad size and caliper drag can challenge any brake material. The biggest advantage of EBC Bluestuff NDX is their bite from cold and progressive brake feel and the ability to bring a car to a complete stop. This has led to the ECE R90 brake safety regulation approval of R90 which is now completed and certificates are being obtained (during July 2011). There are certain older street based caliper systems where even the new Bluestuff will have trouble handling the caliper and slider drag inherent in the systems but this scenario is exactly the same for our competitors. There is NO material that will be PERFECT on the track in all older street based caliper systems. This Part Fits: Year Make Model Submodel 2017 2021 Mercedes Benz C43 AMG 4Matic 2016 Mercedes Benz C450 AMG 4Matic 2018 2020 Mercedes Benz GLC350e 4Matic 2017 2023 Mercedes Benz GLC43 AMG 4Matic