DBA Audi S4 / S5 4000 Series HD Plain Rear Brake Rotor (DBA42847)

The DBA 4000 Series HD Plain rear rotor for the Audi S4 / S5 is built by Disc Brakes Australia (DBA), a specialist rotor maker with more than 45 years in the business. This one has the HD finish, a smooth OE-style face for drivers who want 4000 Series strength without a drilled or slotted look (it also suits race classes that require an OE-style rotor). DBA rotors are sold individually, so order two for a full axle set.

Rotor details

• Construction: one-piece vented rotor
• Series: DBA 4000 Series
• Face: plain (smooth)
• Outer diameter: 330 mm (12.99 in)
• Thickness: 22 mm (0.87 in)
• Overall height: 36.2 mm (1.43 in)
• Center bore: 68 mm (2.68 in)
• Bolt holes: 5
• Sold: individually (one rotor per part number)

Fitment

• Vehicle: Audi S4 / S5
• Axle: Rear
• DBA part number: DBA42847
• Application listed by DBA: 10-19 Audi S4 Rear 4000 Series Plain Rotor
• Brake packages and rotor sizes vary within a model line, so compare this rotor's 330 mm diameter with your current rotor before ordering. Not sure? Ask us and we will check it against your VIN.

About the DBA 4000 Series

The 4000 Series is DBA's one-piece performance upgrade. It is cast from XG-150 high-carbon alloyed iron and put through Thermal Stability Profiling (TSP), so the rotor copes with repeated heat cycles in hard braking. Vented versions use DBA's Kangaroo Paw vane layout (144 diamond and teardrop-shaped pillars), which DBA says adds surface area and cooling efficiency compared with a straight-vane design.

Shipping & returns

• Orders are processed within 1–3 business days; standard delivery is 3–7 business days within the United States.
• DBA rotors are special-order items from our distributor. We confirm availability and lead time with you after you order.
• We currently ship within the U.S. only. See our Shipping Policy.
• 30-day returns on unused parts in original packaging — see our Return Policy.

Installation at Team ANBD

Team ANBD is a performance shop in Andover, New Jersey, and brakes are what we do. We handle big brake and rotor installation in house and can align or corner-balance the car in the same visit. Book an appointment or ask us about fitment before you order.