Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
The left-hand burnished option arrives with its factory rotor preparation already performed. It remains a separate 48-vane Spec-37 ring, so the 12.19-inch diameter, hat interface and pad compatibility must still match the complete brake system. This component comes from Wilwood Engineering, founded by Bill Wood in 1977 and based in Camarillo, California. Wilwood designs and manufactures disc brake systems, including calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications, with compatibility determined by the complete brake assembly.
Technical Details
- Manufacturer part number: 160-11840-B
- Outside diameter / width: 12.19 inches diameter x 1.25 inches wide
- Material specification: Spec-37 Iron
- Friction surface / finish: GT Slotted; Plain
- Ventilation: 48 CV; curved
- Mounting direction: Left-hand
- Preparation: Balanced: yes; factory burnished: yes
- Opposite-side component, ordered separately: 160-11839-B
- Rotor-to-hat/hub attachment circle: 8 x 7.00 inches
- Attachment hole size or thread: 0.316 inches
- Center registration: 6.38 inches
- Far-side inside diameter: 8.41 inches
- Approximate weight: 12.70 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 6.38-inch register. Check the 8 x 7.00-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
For help identifying the correct replacement, share the installed brake package with PMB Performance. Our team draws on over 20 years of experience with brake components and fitment.
