Wilwood Left Black 12.88-inch SRP Rotor, 1.10-inch Wide with Twelve-Bolt Flange

This left SRP rotor provides the 1.10-inch-wide friction ring for the matching 12.88-inch brake. Its 8.25-inch registration, twelve-point attachment and specified face direction remain essential even when replacing a visually similar rotor. 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: 160-13544-BK
• Friction dimensions: 12.88 inches diameter x 1.10 inches wide
• Construction: Spec-37 Iron
• Surface treatment: SRP Drilled & Slotted; Black electrocoat
• Cooling layout: 48 CV
• Mounting direction: Left-hand
• Supplied preparation: Balanced: yes; factory burnished: no
• Opposite-side component, ordered separately: 160-13543-BK
• 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: 11.90 lb
• Quantity: one rotor ring; hat, hub, mounting hardware, calipers and pads are separate

Fitment & Compatibility

Installation requires a hat or hub designed for the 8.25-inch rotor register and 12 x 8.75-inch attachment. Verify wheel clearance around the complete caliper, along with the rotor's 1.10-inch width. The ring alone does not define a direct-fit vehicle or axle application. Wilwood specifies the SRP face treatment for street and moderate-temperature race duty; severe sustained racing calls for evaluation of the corresponding HD or GT option.

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.