Audi S4 Brake Rotor (1) - Rear Left - Stoptech - Sport Cross Drilled - Black - `04-`09. This StopTech Sport Cross Drilled rear-left rotor is a direct, one-piece replacement designed for 2004–2009 Audi S4 models, combining functional cooling and corrosion protection in a street-friendly package.

Built as a direct OE-fit rotor, the StopTech Sport Cross Drilled rotor features cross-drilled holes to aid heat, gas and brake dust dispersal that help reduce pad glazing and improve initial bite in both wet and dry conditions. The black e-coating provides corrosion resistance for long-term appearance behind open-wheel designs, while StopTech’s metallurgy choices reduce pad squeal and improve resistance to thermal cracking compared with basic cast rotors. This rotor is intended for factory brake systems and stock calipers as a performance-minded visual and functional upgrade without requiring caliper changes.

Features

• Direct one-piece OE replacement for 2004–2009 Audi S4 (rear left)
• Cross-drilled face for improved heat and dust evacuation
• Black e-coating for corrosion protection
• High-carbon metallurgy to help reduce pad noise and resist cracking
• Designed for use with stock calipers and factory brake systems

If you have questions or want help confirming fitment, call us directly—our experts can advise on fit, pad compatibility and installation. We have two locations offering installation and customization services in Austin, Texas and Los Angeles California area. Call Austin: 512-982-9393 (TX) or Los Angeles area: 562-981-6800 (CA).

If you’re thinking about purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov