2021 BMW G31 upgraded with ATRT high performance big brake kits.

[Touring Specification]

ATRT ZS-IV big 8-piston brake caliper + Ø405mm 2-pieces cross-drilled & Slotted Rotors in the front.

[Feature]

#Forge Products (Material 6061-T6 from Taiwan)  

#CNC mrilling machine Proces                           

#Anodizing Aluminium Proces                            

#High strength & Lightweight                                  

#2 cooling vents patents designed by ATRT racing