The DBA 5000 Series Drilled & Slotted Ring for 2015–2020 Audi S3 front is a two-piece direct replacement rotor that combines high-carbon cast-iron rings with aerospace-grade aluminum T6061-T6 hats. Using NAS bolts and crimp nuts, the design reduces unsprung weight and improves heat control while retaining the performance technology of the 4000 Series. The XD option adds non-directional cross-drilled and dimpled discs for enhanced cooling and a sportier appearance, with full assemblies or replaceable rings and hats available.
DBA 15-20 Audi S3 Front 5000 Series Drilled & Slotted Ring