2004 Audi S4 Front Brake Rotors

Carquest Premium painted brake rotors meet or exceed original equipment (O.E.) specifications, delivering superior stopping power with proper harmonic design and non-directional finish that eliminate noise. Carquest Premium painted rotors feature RotorShield, a rust-inhibiting barrier that provides up to 5 times more protection than non-painted rotors. The RotorShield barrier is applied to the rotor hat to protect from unsightly rust and help maintain a like-new appearance. Our rotors are designed to effectively dissipate heat, helping to eliminate brake fade and increase the life of the pads and rotors. Carquest Premium painted brake rotors are designed for long-lasting and quiet braking with superior performance.

Product Features:

• Meets or exceeds OE design for superior stopping power
• Exceeds ISO manufacturing guidelines (International Organization for Standardization)
• Matches OE vane size for proper cooling
• Optimal metallurgy and casting thickness to prevent warping
• Air gap eliminates brake fade and increases pad life
• Non-directional finish decreases break-in time

Power Stop drilled and slotted rotors provide a bolt-on upgrade for improved brake cooling and performance. Precision cross-drilled for maximum cooling and maximum performance during extreme conditions; rounded slots sweep away gasses, dust, and moisture to keep a clean friction contact patch on the rotor surface. Silver zinc dichromate plating resists rust and corrosion. With a direct OE fit, there are no special modifications needed.

Product Features:

• Bolt-on upgrade for stock brakes, no modifications necessary
• Precision cross-drilled for maximum cooling and optimum performance
• Slotted friction surface sweeps away gasses, dust, and water
• Chamfered drill holes and rounded slots to minimize stress cracking
• Zinc plated for protection against corrosion
• Manufactured to strict tolerances for DTV and runout for smooth quiet performance
• Weight and vane count match original equipment design
• 100% dynamic mill balanced
• Sold as a pair

The Zimmermann Sport Brake Disc was developed as a result of experience of brake discs in series-production vehicles in connection with racing. The brake system is optimized by combining high-quality cast materials with a slotted or cross-drilled braking surface. Coat-Z Protective Coating – The Zimmermann Coat-Z brake disc provides a protective coating that prevents rust and corrosion, extended rotor life and improved visual appearance. To improve the rust protection during storage and usage, Otto Zimmermann GmbH implements this new Coat-Z technology step by step in its production range. Beside the still optimum function of the brake disc, this coating ensures a consistent attractive appearance. Material quality / high carbon – Zimmermann brake discs are usually made of cast iron (with flake graphite) of different qualities; they correspond to the material used for the original spare parts. Therefore, the utilization of such materials (referred to as High Carbon by the competition) has always been a matter of course for Otto Zimmermann.

Product Features:

• Coat-Z protective anti-corrosion coating
• Better wet braking performance by permanent expulsion of brake dust and water
• Sporty look
• Because of the anti-corrosion protection Coat Z better finish – especially of the hub and the outer diameter
• Noticeable improvement in the braking power of your car
• Prevention of brake fade
• Countersinking of holes doubles up as wear indicator
• 1:1 exchange of original disc possible
• No additional adaption necessary
• Not subject to registration: general ABE certification supplied with disc