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Product details
This left GTB ring pairs the 15.00-inch diameter with a deep 1.50-inch friction section. Its black finish covers a slotted Spec-37 casting, and both the 9.03-inch register and twelve-on-9.75-inch attachment must match the selected hat. Wilwood Engineering is based in Camarillo, California and was founded by Bill Wood in 1977. It designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. The range covers calipers, brake rotors, master cylinders, valves, fittings and brake lines, all of which require selection around the full brake system rather than an isolated dimension.
Technical Details
- Manufacturer part number: 160-13786-GTB
- Diameter and thickness: 15.00 inches diameter x 1.50 inches wide
- Ring material: Spec-37 Iron
- Face pattern and coating: GT Slotted; Black electrocoat
- Internal layout: 60 CV; curved
- Mounting direction: Left-hand
- Balancing and burnishing: Factory burnished no; balanced yes
- Opposite-side component, ordered separately: 160-13785-GTB
- Rotor-to-hat/hub attachment circle: 12 x 9.75 inches
- Attachment hole size or thread: 0.326 inches
- Center / lug registration: 9.03 inches
- Far-side inside diameter: 10.55 inches
- Approximate component weight: 27.30 lb
- Quantity: one rotor ring; hat, hub, mounting hardware, calipers and pads are separate
Fitment & Compatibility
The 1.50-inch working width must suit the caliper, while the hat centers the ring on its 9.03-inch register. Check the 12 x 9.75-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
PMB Performance can help you identify the matching brake components, drawing on over 20 years of experience. Include the current kit number and mounting measurements when requesting a fitment check.
