The DBA 4000 Series XD drilled front wave rotor for 2006 Audi A3 combines a non-directional cross-drilled and dimpled face with a wave-style outer profile in some applications to increase cooling above the HD spec and enhance visual appeal. As a direct-replacement option, the XD finish helps manage heat buildup and supports steadier pad performance during spirited driving.
DBA 2006 Audi A3 Front 4000 Series Drilled Wavey Rotor