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The DBA 5000 Series drilled front rotor for 2011–2013 BMW 1M (E82) and 2008–2013 BMW M3 (E90/92/93) is a two-piece direct-replacement rotor combining a high-carbon cast-iron ring with an aerospace-grade aluminum hat (T6061-T6) fastened to NAS standards. The XD non-directional drilled and dimpled finish improves cooling and structural stability while reducing unsprung weight, making it suitable for high-performance street, track day and club racing applications.
DBA 11-13 BMW 1M (E82) / 08-13 BMW M3 (E90/92/93) 5000 Series Drilled Front Rotor
