BMW 3series (E46) factory brake system upgraded with ATRT high performance big braking system. 
 
[Touring Specification] 
ATRT ZS-IV Big 6POT brake caliper + Ø355mm 2-pieces full floating cross-drilled & slotted Rotors in the front.
 
[Feature]
#Forge Products (Material 6061-T6 from Taiwan)   
#CNC mrilling machine Proces                            
#Anodizing Aluminium Proces                             
#2 cooling vents patents designed by ATRT racing