Quick view Carbotech Carbotech 1521 Brake Pads - Front CT908 - Lexus GS300 Carbotech 1521 Compound Brake Pads & Shoes The Carbotech™ 1521™ is the high performance street compound. The 1521™ compound is known for its release and modulation, along with unmatched rotor friendliness. 1521™... â‚©192,944 Add to Cart 1 2 3 4 5