Wilwood BP20 Track-Day Pads for XRS4R/XRS6R Calipers

This BP20 set gives the XRS4R and XRS6R pad profile a friction compound intended for a wider temperature range than BP10. Four 0.65-inch pads are supplied, retaining the same need to match the caliper's backing-plate and clearance requirements. Wilwood Engineering has designed and manufactured disc brake systems since Bill Wood founded it in 1977. The company is based in Camarillo, California, and covers motorsport, street-performance and specialized applications. Its product range—calipers, brake rotors, master cylinders, valves, fittings and brake lines—must be matched to the complete installation.

Technical Details

• Manufacturer part number: 150-20-10416K
• Friction compound: BP20
• Package quantity: 4 pads
• Pad thickness: .65 inch
• Published pad area: 8.2 square inches
• Published pad volume: 3.8 cubic inches
• Rotor compatibility: Steel, Stainless Steel, Iron
• Bedding status: not pre-bedded; follow Wilwood bedding procedure
• Pad profile: 10416

The BP20 compound balances street compatibility with the greater heat range needed in track days, autocross and moderately demanding competition. It can run against iron, steel and stainless-steel rotors. Low-to-moderate dust and noise ratings accompany a friction curve that builds as the brakes warm.

Fitment & Compatibility

Wilwood’s compatible-caliper list names Forged XRS4R Radial Mount, Forged XRS6R Radial Mount. Use the existing pad and caliper specification to identify the correct plate. Confirm the retaining arrangement and unworn pad thickness, then check that the rotor material and braking duty suit BP20.

Reference: Wilwood product specifications and compound guidance. Manufacturer profile illustration.

For selection assistance, PMB Performance combines over 20 years of experience with a focus on the actual braking hardware. Share the caliper specification and intended use before ordering an uncertain fit.

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.