EBC 2021+ BMW G20 3 Series Bluestuff Front Brake Pads COB vs. EOD: What Each Means & How to Use Them. 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 2021 2022 BMW 330e Base 2021 2022 BMW 330e xDrive Base 2019 2022 BMW 330i Base 2019 2022 BMW 330i xDrive Base 2021 2022 BMW 430i Base 2021 2022 BMW 430i xDrive Base 2022 BMW i4 M50 2020 2022 BMW M340i Base 2021 2022 BMW M440i xDrive Base 2022 BMW Z4 M40i 2020 BMW Z4 M40i First Edition 2020 2021 BMW Z4 sDrive M40i 2019 2022 BMW Z4 sDrive30i 2021 2022 Toyota GR Supra A91 Edition 2021 2022 Toyota GR Supra Base 2021 2022 Toyota GR Supra Premium