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Product details
Founded in 1977 by Bill Wood, Camarillo, California-based Wilwood Engineering designs and manufactures disc brake systems. Its calipers, rotors, master cylinders, valves, fittings and lines serve motorsport, street and specialized applications with different operating requirements. BP-40 brake pads in the .67-inch AERO4/AERO6 and W4A/W6A configuration supply four replacement pads. Every component must suit the complete brake system in which it operates.
Technical Details
- Manufacturer part number: 150-40-6617K
- Pad/shoe profile: 6617
- Compound: BP-40
- Catalog pad area: 11.1 square inches
- Supplied condition: Not pre-bedded; follow the instructions for the selected compound and brake system.
- Package quantity: 4 individual pads
- Catalog thickness: .67 inch
- Catalog pad volume: 5.2 cubic inches
- Listed Wilwood calipers: Aero4; Aero4-Dust Seal; Aero6; Aero6-Dust Seal; Aero6-DM; W4A; W6A
In the .67-inch AERO/W-series profile, BP-40 gives an assertive first response for race braking. It also offers useful cold friction and resistance to fade during repeated hot stops. Iron, steel, stainless steel, titanium and Super Alloy appear in Wilwood’s rotor-material list. This compound is for competition; the pad’s physical fit does not establish street suitability.
Fitment & Compatibility
Use the 0.67-inch pad only in the listed AERO4, AERO6 and W-series configurations. The thicker 0.80-inch AERO option is a separate selection, even where the pad face appears similar.
Manufacturer Reference
Wilwood pad dimensions, compound and caliper information
PMB Performance brings over 20 years of parts and fitment experience. Contact our team with the caliper details and rotor specification to confirm the right pad.
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.
