Yes there are a total of 6 total. Some people dont run all six. I bough the stoptech kit which came with 6 and did not install the two inner ones.
BMW E92 M3
EVOLVE Stage II | EVOLVE X-Pipe | EVOLVE E-Tronic Exhaust
Macht Schnell Stage II intake | KW V3 | Volk TE37SL | BMW Performance Spoiler
Apex Stud Kit