Brake Pad Set BP-40 10420 XRZ4R

The Wilwood Brake Pad Set BP-40 10420 XRZ4R delivers high-friction, high-temperature braking performance engineered for racing and extreme duty applications. This four-pad set pairs the proven BP-40 compound with XRZ4R calipers, providing consistent stopping power under sustained thermal loads. The BP-40 material is specifically formulated to resist fade at temperatures where standard street pads lose effectiveness, making it the choice for track use, autocross, and performance driving where brake reliability is non-negotiable.

Wilwood's BP-40 compound maintains stable friction coefficients across a wide temperature range, preventing the performance cliff that compromises safety in conventional pads. The friction characteristics of this material support aggressive braking inputs without undue pedal pressure, critical for drivers who demand immediate, predictable response. The pad set weighs 4.55 lbs and is dimensioned at 4 x 3.5 x 6 inches, fitting the XRZ4R caliper mounting specification precisely. This compatibility ensures proper bedding, heat transfer, and wear characteristics—factors that affect both safety and pad longevity.

This brake pad set is intended for drivers, track enthusiasts, and performance vehicle owners operating cars equipped with XRZ4R calipers. It solves the brake fade problem that emerges during extended high-speed driving or repeated hard stops—scenarios where factory or street-duty pads lose friction and feel. Users on road courses, in time-attack events, or pushing performance limits in controlled environments rely on high-temperature compounds to maintain stopping authority when stock hardware cannot deliver. The BP-40 10420 set brings race-proven Wilwood engineering to drivers who refuse brake compromise.