Wilwood Right SRP Spec-37 Rotor, Black 12.88 x 1.00-inch, 48 Curved Vanes

The SRP version adds drilled openings alongside the slots on this right-hand 12.88-inch ring. Its one-inch width and 48 curved vanes fit a specific caliper-and-hat combination, with moderate-temperature service distinguished from sustained endurance demands. Bill Wood founded Wilwood Engineering in 1977. Based in Camarillo, California, the company designs and manufactures disc brake systems, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Its motorsport, street-performance and specialized components are selected around the requirements of the whole braking system.

Technical Details

• Manufacturer part number: 160-13358-BK
• Rotor size: 12.88 inches diameter x 1.00 inches wide
• Rotor material: Spec-37 Iron
• Face and finish: SRP Drilled & Slotted; Black electrocoat
• Vanes: 48 CV
• Mounting direction: Right-hand
• Factory condition: Factory burnished no; balanced yes
• Opposite-side component, ordered separately: 160-13359-BK
• Rotor-to-hat/hub attachment circle: 12 x 8.75 inches
• Attachment hole size or thread: 0.251 inches
• Center / lug registration: 8.25 inches
• Far-side inside diameter: 9.46 inches
• Approximate component weight: 10.40 lb
• Quantity: one rotor ring; hat, hub, mounting hardware, calipers and pads are separate

Fitment & Compatibility

The 1.00-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. 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

With more than 20 years of parts and brake-system experience, PMB Performance can help review the rotor, hat and caliper combination before you order.