Wilwood Left Plain-Face HD Brake Rotor, 13.06 x 1.25-inch, 48 Curved Vanes

The left-hand 13.06-inch HD rotor provides a smooth contact surface on a Spec-37 heavy-wall ring. It is a separate friction component for an 8.75-inch-circle hat, with its 1.25-inch width setting the required caliper clearance. The broader Wilwood range covers calipers, brake rotors, master cylinders, valves, fittings and brake lines. Wilwood Engineering was founded by Bill Wood in 1977 and is based in Camarillo, California, designing and manufacturing disc brake systems for motorsport, street-performance and specialized applications. Individual components must be coordinated with the complete braking system.

Technical Details

• Manufacturer part number: 160-12787
• Friction dimensions: 13.06 inches diameter x 1.25 inches wide
• Construction: Spec-37 Iron
• Surface treatment: Plain Face; Plain
• Cooling layout: 48 CV; curved
• Mounting direction: Left-hand
• Supplied preparation: Balanced: yes; factory burnished: no
• Opposite-side component, ordered separately: 160-12786
• Rotor-to-hat/hub attachment circle: 12 x 8.75 inches
• Attachment hole size or thread: 0.251 inches
• Center registration: 8.25 inches
• Far-side inside diameter: 9.46 inches
• Approximate weight: 12.30 lb
• Quantity: one rotor ring; hat, hub, mounting hardware, calipers and pads are separate

Fitment & Compatibility

The 1.25-inch working width must suit the caliper, while the hat centers the ring on its 8.25-inch register. Check the 12 x 8.75-inch attachment and radial pad coverage before installation. Vehicle make or wheel pattern alone cannot identify a replacement rotor ring. Select pads and operating duty to suit the rotor material and the intended brake system.

Manufacturer reference: Wilwood rotor specifications

Choosing a rotor involves more than its outside diameter. PMB Performance's 20-plus years of brake and parts experience can help you check the component against your existing assembly.