EBC S9KF1788 S9 Yellowstuff Brake Pad and USR Slotted Rotor Kit

EBC S9KF1788 Yellowstuff Brake Pad and USR Slotted Rotor Kit

The EBC S9KF1788 is a complete performance brake upgrade kit that combines EBC's flagship Yellowstuff high-friction brake pads with precision-machined USR (Ultimax Slotted Rotor) sport rotors. This matched brake system delivers superior stopping power, reduced brake fade, and quieter operation compared to traditional slotted rotor designs.

What's Included

• EBC Yellowstuff high-performance brake pads (front and/or rear, application-specific)
• USR Series sport slotted rotors with fine slot pattern
• Brake caliper lubricant

Yellowstuff Brake Pad Features

The Yellowstuff pads in this kit are EBC's flagship street and performance compound, engineered for drivers who demand maximum stopping power. These GG-rated pads provide 30-40% greater brake effect compared to factory brake pads while maintaining excellent cold performance. The aramid fiber construction delivers high friction from the first application without requiring warm-up, making them ideal for spirited street driving, towing, trucks with oversized wheels, and occasional track use.

Each pad features EBC's patented Brake-In coating, which enables immediate safe braking performance right out of the box. The pads are fully shimmed, chamfered, and slotted to minimize noise and vibration while promoting even wear. ECE R90 approved for street legality, Yellowstuff pads maintain consistent performance across a wide temperature range and resist brake fade even under repeated heavy braking.

USR Slotted Rotor Features

The USR (Ultimax Slotted Rotor) series features a unique fine-slot pattern specifically designed to reduce wind noise while maintaining all the performance benefits of slotted rotors. The narrow, progressively angled slots effectively expel brake gases, water, dirt, and debris from the braking surface while promoting flat, parallel pad wear that prevents ridge formation.

Manufactured from premium R90-approved G3000 gray iron, these rotors are precision-machined in the UK or USA and undergo rigorous quality control including runout inspection and balance testing. The protective coating provides corrosion resistance on non-contact areas.

S9 Kit Advantages

Save approximately 15% compared to purchasing pads and rotors separately. The S9 kit offers a significant upgrade over the S5 kit through its USR rotors, which feature a finer slot pattern that dramatically reduces the whistling and wind noise often associated with slotted rotors while maintaining superior brake performance.

Performance Benefits

• GG-rated friction compound for maximum stopping power
• 30-40% improvement in brake effect over OEM pads
• Reduced brake fade under heavy use
• Quieter operation than traditional slotted rotors
• Improved heat dissipation and debris removal
• Promotes even pad and rotor wear
• Works from cold temperature without warm-up
• Dust levels similar to OEM pads

Ideal Applications

This brake kit is perfect for performance street driving, spirited driving enthusiasts, trucks and SUVs with oversized wheels, towing applications, and vehicles requiring enhanced stopping power. The balanced design works well for daily driving while providing the capability to handle more demanding conditions.

Installation Notes

Direct replacement for OEM brake components with no modifications required. EBC recommends a 500-mile break-in period with moderate braking to allow pads to properly seat. The Brake-In coating allows for safe braking immediately after installation.