Wilwood Aero 4/6 Pad Backing Shim Kit, Four Shims

Wilwood's Aero pad shim kit places a steel-and-elastomer damping layer at the pad backing interface. This four-piece set follows the Aero 4/6 pad profile and supplies the shims needed for two calipers. Bill Wood established Wilwood Engineering in 1977. Based in Camarillo, California, the company makes disc-brake systems and components for motorsport, street-performance and specialized uses, including brake calipers and rotors, hydraulic master cylinders, valves, fittings and lines. System requirements determine the appropriate component combination.

Technical Details

• Manufacturer part number: 300-16879
• Material: Composite
• Finish: Black
• Package: 1 kit with 4 shims for 2 calipers
• Weight: 0.350 lb
• Application: Aero 4/6 pad profile
• Material construction: steel and elastomer

Fitment & Compatibility

Match the installed Aero 4 or Aero 6 pad backing shape to this shim set. Verify the pad thickness and remaining caliper clearance with the shims in place.

Manufacturer Documents

• Wilwood hardware specifications

Before ordering for a modified assembly, send PMB Performance the kit number and relevant component details. Our over 20 years of experience can help you confirm the correct combination.