PIII GR Yaris Brake Cooling KitDESCRIPTION The GR Yaris Brake system is a very competent one from factory, but tracking the car frequently can test even the best of road car systems, and this is no exception. While temperatures do get hot with the standard OEM brake pads, things start getting out of hand when you install aftermarket, high friction brake pads. This translates in many issues, among which caliper paint fading and rubber dust boots melting, that can be catastrophic