The Carbotech 1521 is a high performance street compound, known for its release and modulation, along with great rotor friendliness. The 1521 compound is also a very low dusting and designed for low noise operation and an excellent initial bite. This compound's excellent linear torque production provides incredible street/spirited braking force without ABS intervention. Carbotech 1521 operating range starts out at ambient and goes up to 800°F (426°C+). 1521™ is suitable for ALL street cars.
Carbotech 1521 is NOT recommended for ANY track use. This pad is well suited for aggressive/spirited street driving and canyon carving type duty.
This pad set shape was common used on the E39 5 series, including E39 530i, 540i, and M5, as well as E38 7 Series 740i / 740iL, some E31 8 Series (except the cars with factory Brembo calipers), and the first generation BMW X5 (E53 chassis), including 2000-2006 X5 3.0 and X5 4.4i V8 models.
BMW Fitments:
5 Series
E39 (97-03) > 530i
E39 (97-03) > 540i
E39 (97-03) > M5 (00-03)
7 Series
E38 (95-01) > 740i
E38 (95-01) > 740iL
8 Series
E31 (91-97) > 850CSi
X5 Series
E53 X5 (00-06) > X5 3.0i M54
E53 X5 (00-06) > X5 4.4i M62 (99-03)
E53 X5 (00-06) > X5 4.4i N62 (04-06)