The DBA 5000 Series replacement ring for Audi TT Quattro (2004–2006) front applications is part of a composite two-piece direct-replacement rotor combining a high-carbon cast-iron ring with an aerospace-grade aluminum hat. T6061-T6 aluminum hats with NAS bolts reduce unsprung weight and improve heat management. The 5000 Series preserves 4000 Series technology while adding weight reduction and cooling advantages for demanding street and motorsport use.
DBA 04-06 Audi TT Quattro 3.2L Front Left 5000 Series Replacement Ring