EBC GD1421 GD Sport Front Brake Rotors for 2004–2008 Audi S4 4.2L

All EBC rotors are made from OE spec grey cast iron, exactly as used on new car production and as many as we have tools for are BRITISH MADE wholly in our own UK foundry. Currently EVERY SINGLE ROTOR sold in Europe and the UK is BRITISH MADE and a majority of the designs specific to the USA are also BRITISH made.The British foundry is constantly expanding its in house tooled range but EBC like every brake manufacturer ....does need occasionally to buy some rotors in from approved sources to complete ranges in overseas markets. None of our competitors will ever tell you where their rotors come from and we at EBC are as disappointed as the rest of the world that cost pressure means there is not ONE foundry left in the USA to supply such parts, other brake brands when asked about origin will just sidestep the question. When we do buy rotors in, they are specified, sampled, tested for element analysis, grain structure, tensile strength, hardness and optimum ductility and tested 100 piece by piece to be perfect for runout on this in house machine. For FMSI Pad No. D1111

• Removes dirt dust and debris from braking zone
• Anodized For Protection/Black For Domestics
• Reduces brake fade under load and at speed
• Great For Truck/SUV/Towing/For Sedan Use
• Anodized For Protection/Gold For Imports
• Wide Slots Helps Brakes Run Cooler

Brief Description: EBC GD1421 GD Sport Front Brake Rotors are engineered for the 2004–2008 Audi S4 equipped with the 4.2L engine. Built from OE-specification gray cast iron, these performance rotors provide dependable braking control for daily driving, spirited use, towing, and demanding truck or SUV applications where applicable. The GD Sport design uses wide slots to help remove dirt, dust, and debris from the braking zone while promoting cooler brake operation.

EBC manufactures many rotor designs in its own British foundry, with production components specified and tested for material composition, grain structure, tensile strength, hardness, ductility, and runout. The rotors are designed to work with applications using FMSI pad number D1111 and are suitable for drivers seeking improved resistance to brake fade under load and at speed. A protective anodized finish helps guard the rotor surfaces, with a black finish used for domestic applications and a gold finish used for import applications as applicable to the product design.

• Feature: Wide brake slots help evacuate friction material dust and debris while supporting cooler operating temperatures.
• Feature: OE-spec gray cast iron construction delivers consistent braking performance and durability.
• Feature: Designed to reduce brake fade during repeated braking, high-speed driving, towing, and loaded conditions.
• Feature: Protective anodized finish helps resist surface corrosion and supports long-term appearance.

Key Product Specifications & Technical Data:

• Brand: EBC
• Part Number: GD1421
• Product Type: GD Sport front brake rotor
• Vehicle Application: 2004–2008 Audi S4
• Engine Application: 4.2L
• Pad Compatibility: FMSI pad number D1111
• Material: OE-spec gray cast iron
• Rotor Design: Slotted performance design with protective anodized finish

What's Included in the Box: One EBC GD1421 GD Sport front brake rotor. Brake pads, installation hardware, and other components are not included unless specified separately. Confirm vehicle year, engine, axle position, and brake configuration before installation.

Features:

• Wide slots help remove dirt, dust, and debris from the braking zone while helping brakes run cooler.
• OE-spec gray cast iron construction supports consistent braking performance and durability.
• Designed to reduce brake fade under load, at speed, during towing, and in repeated braking conditions.
• Protective anodized finish helps resist corrosion and provides a durable surface treatment.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1