Pagid RST4 Racing Brake Pads - StopTech C43/ST43 Caliper (Wide Annulus)
Sprint pad with medium friction and stable torque. Often used as a rear pad. Wider pad shape for specific StopTech rotors.
Pagid RST Red brake pads are formulated for iron discs and are an upgrade for StopTech C43 and ST43 calipers with a wide pad area. This is the Wide Annulus pad shape with a wider (taller) pad - 51mm vs 43mm.
The RST4 compound is a semi-metallic resin bonded material containing steel fibers. This compound has a low but stable torque output across all temps. Bite and modulation are strong but the lower torque output often puts this on the rear axle to custom-tailor braking bias, especially on front-engine GT and touring cars.
Pagid RST4 Characteristics
+ medium friction level
+ very good fade resistance
+ stable torque output across all temperatures
+ good pad wear with very good rotor wear
+ high initial bite
Front and rear brake compounds should be closely matched to maintain brake balance. Never upgrade one axle and not the other.
Pagid Racing supplies many of the top teams in international motorsport in addition to their work as a technical partner with several factory racing programs (including BMW Motorsport). Pagid Racing engineers motorsport products that achieve the highest performance levels by offering multiple products and compounds to suit a wide range of needs and conditions. All Pagid Racing brake pads are engineered, developed, and manufactured in Germany.