Wilwood Left Slotted Spec-37 Rotor, 12.00-inch Diameter and 0.81-inch Width

For a left-side 12.00-inch brake assembly, this GT ring offers a slotted surface on Spec-37 iron. Its 0.81-inch section is distinct from wider race rotors, and the shared eight-bolt pattern does not by itself establish interchangeability. Camarillo, California is home to Wilwood Engineering, founded in 1977 by Bill Wood. The company designs and manufactures disc brake systems and their calipers, brake rotors, master cylinders, valves, fittings and brake lines. Across motorsport, street-performance and specialized applications, these components must be matched as parts of a complete braking system.

Technical Details

• Manufacturer part number: 160-12288
• Friction dimensions: 12.00 inches diameter x 0.81 inches wide
• Construction: Spec-37 Iron
• Surface treatment: GT Slotted; Plain
• Cooling layout: 36 CV; curved
• Mounting direction: Left-hand
• Supplied preparation: Balanced: yes; factory burnished: no
• Opposite-side component, ordered separately: 160-12287
• Rotor-to-hat/hub attachment circle: 8 x 7.00 inches
• Attachment hole size or thread: 0.326 inches
• Center registration: 6.38 inches
• Far-side inside diameter: 8.41 inches
• Approximate weight: 9.00 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 6.38-inch rotor register and 8 x 7.00-inch attachment. Verify wheel clearance around the complete caliper, along with the rotor's 0.81-inch width. The ring alone does not define a direct-fit vehicle or axle application. 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.