Wilwood Front GM 2500/3500 GT Rotor, 15 x 1.50 Inches, Eight-Stud Hat

The 1.50-inch section and 15-inch diameter give this GT rotor the geometry used in the specified GM heavy-duty truck TX6-DM front package. The integral hat clears eight wheel studs on a 180 mm circle and carries a 2.000-inch offset. Founded in 1977, Bill Wood’s Wilwood is based in Camarillo, California and designs and manufactures disc brake systems for motorsport, street performance and specialized applications. Its range runs from calipers and rotors to master cylinders, valves, fittings and lines. Choosing a rotor involves matching those surrounding components as well as the vehicle’s intended use.

Technical Details

• Manufacturer part number: 160-17463-GTB
• Quantity: One rotor; not an axle pair
• Outside diameter: 15.00 inches
• Nominal thickness: 1.50 inches
• Rotor material: Iron
• Construction: 48 vanes
• Friction surface: GT Slotted
• Finish: Black Electro Coat
• Approximate weight: 42.25 lb
• Factory burnished: No
• Installation orientation: Non-directional
• Registration / lug inside diameter: 5.01 inches
• Far-side inside diameter: 10.62 inches
• Rotor offset: 2.000 inches
• Internal clearance diameter: 8.80 inches
• Mounting-face thickness: 0.40 inches
• Hat wheel-stud clearance pattern: 8 x 7.087 inches
• Wheel-stud clearance hole diameter: 0.64 inches

The integral hat is part of the rotor; caliper, pads, parking-brake mechanism and installation hardware are separate.

Fitment & Compatibility

DS1585 covers qualified 2011–2019 GM 2500/3500 trucks, while DS1583 addresses the later 2020-onward platform. Confirm the exact current vehicle and installed kit; an open-ended document does not establish every later model year.

Wilwood product specifications · Rotor dimension diagram · Installation reference DS1583 · Installation reference DS1585

PMB Performance offers more than 20 years of brake experience and practical help with replacement parts. Contact our team if you need assistance confirming the rotor for your installation.