Wilwood 170-11682 Big-Brake GT Rotor Hat, 0.75" Offset

Application / Use

• Universal / custom big-brake builds
• Intended for use with compatible Wilwood rotors and caliper systems

Features

• GT Series big-brake rotor hat design for strength and lightness
• Aluminum construction reduces unsprung weight
• Short .750" hat offset for use in tight clearance applications
• Black e-coat finish for corrosion resistance and clean appearance
• Threaded rotor-mount holes for use with standard through-hole rotors
• Precision machined to provide reliable mounting with Wilwood rotor hardware kits
• Compatible with T-nuts or bobbins on dynamic-mount rotors
• Ideal for narrow-space installations where deep hats cannot be used

Specifications

• Part Number: 170-11682
• Bolt Pattern (Hat): 4 x 3.93"
• Rotor Bolt Circle: 6 x 6.25"
• Offset: 0.75"
• Material: Aluminum
• Finish: Black e-coat
• Mount Style: Threaded
• Face Thickness: ~0.32"

Included Components

• 1x GT big-brake rotor hat (0.75" offset)

Product Description

The Wilwood 170-11682 is a finely machined rotor hat from the GT Series, designed for users building or upgrading high-performance braking systems. Made from aluminum, it delivers a lightweight yet strong interface for Wilwood rotors, helping reduce unsprung mass and improve brake responsiveness.

With a short 0.75" offset, this hat is well-suited for installations where space is limited - such as in tight wheels or custom suspension setups. The black-e-coat finish offers durability and resistance to corrosion, making it both practical and stylish.

Threaded mounting holes allow compatibility with standard through-hole rotors or dynamic-mount designs using T-nuts or bobbins, offering flexibility in brake system architecture. This hat is ideal for performance builds, big-brake upgrades, and racing applications.