EBC S9KR1521 Rear Brake Kit Yellowstuff & USR for 16-19 Ford Focus RS

Vehicle Fitment

• 2016-2019 Ford Focus RS (Rear, AWD, 2.3L I4 Turbo)

Features

• High-friction EBC Yellowstuff rear brake pads for increased stopping power
• USR fine slotted sport rotors for better heat dissipation and cooling
• Thermic/Geomet anti-rust coating on rotors for extended corrosion resistance
• Direct bolt-on rear brake kit - installs without modifications over stock
• Patented EBC Brake-in™ pad coating for quicker pad seating and reduced break-in time
• Balanced rotors for smooth operation and minimized vibration
• Yellowstuff compound optimized for fast street use and spirited driving
• Kits combine pads and rotors for easier installation and cost savings

Specifications

• Position: Rear brake kit
• Pad Compound: EBC Yellowstuff high-friction aramid fiber
• Rotor Type: USR sport slotted
• Rotor Diameter: ~271 mm (10.7 in)
• Rotor Height: ~41 mm
• Minimum Thickness: ~10 mm
• Bolt Pattern: 5 lug rear hubs
• Recommended Use: Performance street driving and enhanced daily use

Included Components

• 1x set of EBC Yellowstuff rear brake pads (pair)
• 2x USR slotted rear rotors

Product Description

The EBC S9KR1521 Rear Brake Kit pairs high-friction Yellowstuff brake pads with USR slotted sport rotors to deliver a major performance upgrade over stock rear brake components. The Yellowstuff pad compound is engineered to provide stronger bite and improved stopping power during daily driving and spirited street use. USR slotted rotors improve heat dissipation to help reduce brake fade and maintain consistent performance under varied conditions. The thermic/Geomet anti-rust coating on rotors enhances durability and protects against corrosion, extending service life.

Fitment for this kit is confirmed on **2016-2019 Ford Focus RS** models equipped with the 2.3 L turbocharged inline-4 engine and all-wheel-drive configuration. Installation uses the vehicle's existing hardware and calipers with no modifications required, making this a straightforward upgrade for Focus RS owners seeking better rear braking performance and longevity compared to stock parts. This kit is optimized for enhanced street performance but is not intended for dedicated racing use.