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The DBA 5000 Series drilled front ring for the 2011 BMW 1 Series M is a two-piece replacement ring featuring the XD non-directional cross-drilled and dimpled design. The XD finish improves cooling performance over HD variants and adds a sportier aesthetic to the rotor assembly. Provided as a ring for use with compatible hats and NAS fasteners, this option helps manage heat for demanding street or track use.
DBA 2011 BMW 1 Series M Front 5000 Series Drilled Ring
