Perhaps one of the best-respected names in performance braking, Alcon Pro System Brakes highlighted some of its best brake systems for street and competition use at SEMA 2018. Their newest offerings for the aftermarket/street market are the RC4 and RC6. These big brake kits are the sportiest offerings for BMW and Nissan bolt-on performance for those who want to test their car’s abilities and run quick laps at the track without fearing fade or fire.
Of these two, the RC4 is the introductory model. This system uses a forged, 2-piece 4-piston caliper, as well as fairly hefty disc sizes ranging from 330 x 28mm to 380 x 32mm. The pad area — 66.1cm² — provides more than enough for an M1, M2, or M3 to decelerate forcefully and repeatedly.
Read more at Turnology.