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The DBA 4000 Series rear slotted and dimpled rotor for 2011–2012 BMW 1M (E82) uses XG-150 high-carbon alloy iron and Thermal Stability Profiling for consistent performance under repeated heavy braking. Its Kangaroo Paw ventilation with 144 diamond and teardrop pillars increases surface area and cooling efficiency versus straight vanes, while the non-directional cross-drilled and dimpled XD finish adds extra cooling benefits.
DBA 11-12 BMW 1M (E82) Rear Slotted & Dimpled 4000 Series Rotor
