EBC S4KR1550 Rear Brake Kit Redstuff USR for 2012-2023 Audi A4 A6 Quattro

Vehicle Fitment

• 2019-2023 Audi A4 (B9 Platform, 2.0L I4 Turbo, FWD/AWD Quattro)
• 2012-2023 Audi A6 Quattro (C7/C8 Platform, V6 Turbo variants, AWD)

Fitment Notes

• Rear axle kit only
• Not compatible with front axle applications
• Confirm rotor diameter and caliper configuration before installation
• Designed for performance trims and standard factory brake packages

Features

• Complete rear brake upgrade kit (pads + rotors + hardware support fluid)
• Redstuff ceramic-aramid compound for low dust braking
• USR slotted rotor design for improved heat dissipation
• Geomet anti-corrosion rotor coating for long service life
• Reduced brake fade under repeated high-speed braking
• Precision slotted rotors improve pad bite consistency
• NVH-optimized chamfered and shimmed pad design
• Direct OEM-style fitment with no modifications required
• Balanced street performance and spirited driving capability

Specifications

• Part Number: S4KR1550
• Position: Rear axle
• Rotor Type: Vented, slotted (USR series)
• Rotor Material: Cast iron
• Rotor Coating: Geomet anti-rust finish
• Pad Material: Redstuff ceramic/aramid fiber compound
• Wheel Bolt Pattern: 5-lug application (vehicle dependent)
• Design Purpose: Street performance / fast road use

Included Components

• 2x Rear slotted brake rotors
• 1x Set rear Redstuff brake pads
• 1x Caliper lubrication pack

Product Description

The EBC S4KR1550 rear brake kit is engineered as a complete performance upgrade for Audi A4 and A6 Quattro platforms, combining Redstuff low-dust brake pads with USR slotted rotors. This pairing is designed to improve braking consistency, reduce fade, and maintain stable stopping performance during both daily driving and spirited road use.

The Redstuff compound uses a ceramic and aramid fiber blend that significantly reduces brake dust while maintaining strong initial bite. Paired with USR precision-slotted rotors, the system improves heat evacuation and keeps the pad surface clean for consistent friction performance. The Geomet coating also protects against corrosion, extending rotor life in all weather conditions.

This kit is intended for drivers seeking a noticeable improvement over OEM braking without sacrificing comfort or noise levels. It installs as a direct replacement for factory rear components and is suitable for both stock and mildly upgraded Audi setups, offering a balanced combination of durability, cleanliness, and enhanced stopping confidence.