The DBA 4000 Series drilled rear rotor for 2014–2016 BMW M235i applications features XG-150 high-carbon alloyed iron construction with Thermal Stability Profiling and a non-directional cross-drilled, dimpled XD surface finish. The XD design improves cooling above HD spec and adds a sportier appearance while DBA's Kangaroo Paw ventilation increases surface area and heat dissipation versus traditional straight vane rotors, making it a direct-replacement sport rotor.
DBA 14-16 BMW M235i Rear 4000 Series Drilled Rotor