Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
Wilwood's 1.710-inch-offset rear drag hat has a blank hub flange. Select the matching rotor and check the mounting face before machining. Wilwood Engineering designs and builds disc brake systems in Camarillo, California. Bill Wood established the company in 1977; it supplies brake rotors, calipers, master cylinders, valves, fittings and lines for specialized applications, street performance and motorsport. The complete brake system determines which individual components are appropriate.
Technical Details
- Manufacturer part number: 171-3754
- Mounting-face thickness: 0.25 inches
- Manufacturer-listed attachment hardware reference: 230-0233D; verify the specific rotor and attachment arrangement before ordering hardware
- Rotor-bolt clearance: The listed 230-0233D kit uses short-profile hex-head bolts for the solid-rotor drag assembly. Use 230-2589 only where the installation provides sufficient clearance between the rotor-bolt heads and caliper mounting hardware.
- Manufacturer installation note: 3.06 " diameter register with counterbore for register ring.
- Component: Drag Brake Rotor Hat
- Material: Aluminum
- Surface finish: Black E-Coat
- Rotor mounting method: Fixed Mount
- Position in the specified brake assembly: Rear
- Hat offset: 1.710 inch
- Rotor attachment interface: 8 x 7.00 inches; rotor attachment, separate from the hub flange
- Hub-flange mounting/clearance pattern(s): Blank — flange requires machining
- Center register diameter: 3.06 inches
- Rotor mounting hole/thread designation: 5/16-18
- Internal clearance diameter: 6.14 inches
Fitment & Compatibility
Identify the installed brake conversion before choosing this hat for Custom drag brake systems. The offset, center register and attachment hardware must agree with the rotor and hub in that assembly. The blank hub flange is not ready to bolt on. Have a qualified machinist verify the drilling layout, register and finished mounting surfaces for the intended assembly.
Manufacturer Reference
Wilwood component specifications and dimensions · Wilwood 230-0233D / 230-2589 hardware-clearance reference
PMB Performance brings over 20 years of experience to brake-component selection. Provide the actual hardware specification when the brake system has been modified.
