Wilwood’s GT Rotor and Lug Drive Hat Assemblies are preassembled packages of our latest and greatest technology and design. The lug-drive rotor mounting system eliminates the rotor bolts and instead, a large single internal snap-ring retains the rotor in the hat. This system allows the rotors to move independently of the hats as they expand and contract through heat cycles. All thermally generated stress is removed from the rotor attachment points. The rotors stay flatter and run truer. Paired with GT 72 Curved Vane Spec-37 rotors that are manufactured from a proprietary iron alloy developed to withstand extreme temperatures with the highest possible degree of resistance against distortion, warping, cracking, and wear.
Wilwood Engineering designs and manufactures high-performance disc brake systems. Since the company’s inception in 1977 by Bill Wood, we have developed a substantial matrix of brake components and engineering techniques that allow us to quickly and reliably create brake systems for almost any application. Our core ability is the rapid development of custom engineered brake systems using a combination of off-the-shelf and custom components. In addition to designing and manufacturing brakes for all types of competitive motor sports, Wilwood also manufactures brake systems and components for agricultural equipment, industrial applications, utility vehicles, snowmobiles, quads, motorcycles and military vehicles.
With headquarters in Camarillo, California, Wilwood employs approximately 250 people. We have on-shelf stock of more than 300 different brake calipers, 200 rotor designs, 100 master cylinder designs and a wide assortment of brackets, fittings, valves and brake lines. Our off-shelf brake calipers range in size from tiny calipers used on go-carts and light duty industrial equipment, to heavy duty original equipment brakes for the U.S. military Humvee.
Wilwood's engineering department uses the latest computer-aided design and manufacturing techniques in conjunction with finite element analysis, dynamic test and cycle test equipment, to find high-performance and reliability solutions for the most difficult braking tasks. Our extensive inventory of proprietary on-the-shelf components allow us to provide cost-effective solutions for unique brake applications.
Wilwood is ISO 9000 compliant and has extensive experience maintaining quality levels of 100ppm or less for original equipment manufacturers.
| Rotor Upgrades | |
| Balanced | Yes |
| Bedded | No |
| Rotor Dimensions | |
| Diameter (in) | 15.00 |
| Mount Side | R/H |
| Width (in) | 1.25 |
| Additional Rotor Dimensions | |
| Face Thickness (in) | 0.30 |
| Far Side Inside Diameter (in) | 9.65 |
| Lug ID / Registration (in) | 2.66 |
| Offset Dimension (in) | 0.916 |
| Rotor Bolt Circle (in) | 12 x LUG |
| Rotor Mount Hole Size (in) | Lug |
| Stud Diameter (in) | 0.64 |
| Wheel Bolt Circle (in | 5 x 4.72 |
| Rotor Design | |
| Material | Spec-37 Iron |
| Vane Count | 72 CV |
| Rotor Style & Finish | |
| Style | GT Slotted |
| Surface Finish | Plain |
| Type | GT |
