The EBC Yellowstuff DP43028R is a front brake pad set for the 2014+ Cadillac CTS Vsport 3.6 Twin Turbo, the model this listing is built around. It is sold as a complete front set, so you replace both pads on the front axle at once. If you are searching for a street-and-track pad for a CTS-V-level Cadillac, this is the Yellowstuff front pad specified for that application, and it is a direct replacement for the stock pad rather than a different caliper or rotor setup.
Buy it when you want a pad that works in street driving and on track days without swapping pads between uses. Look up the fitment for your exact model year and trim before you order, and confirm the front pad part number on the box against your vehicle. Searches for "EBC DP43028R CTS Vsport front pads," "CTS-V 3.6 twin turbo Yellowstuff pads," and "2014 CTS Vsport track brake pads" should bring up this exact part.