Description
The Porterfield R4 Front Brake Pads for the GR Yaris are engineered for high-performance motorsport applications, delivering exceptional stopping power and reliability in demanding conditions. These pads are designed to meet the rigorous needs of experienced racers and driving enthusiasts who require superior braking capabilities on the track.
- R4 race compound featuring Carbon Kevlar technology for high durability
- Consistent average friction level of 0.50 across a wide temperature range
- Optimal operating temperatures starting at 450ºF for reliable performance
- Minimal bed-in period when used with cast iron and steel alloy rotors
- Excellent heat absorption and dissipation to protect brake calipers
- Smooth modulation and predictability, enhancing driver control
- Suitable for various applications: road courses, rally, autocross, and more
The R4 pads are ideal for high-boost builds and competitive events, allowing drivers to maintain control under extreme braking conditions while extending rotor life. The unique properties of the Carbon Kevlar material ensure quick warm-up times, beneficial during race restarts or time-limited track sessions.
Constructed with advanced ceramic technology, these pads provide longevity and sustain performance, making them a top choice for championship-winning vehicles. For best results, ensure proper installation and follow manufacturer care recommendations.






