The GNX4 Brake Kit is the product of Wilwood’s in-house FEA design and 3-D modeling technology. The GNX4 caliper paired with 12.00" diameter, .95" width rotors offers a durable, high torque braking solution. This is the current upgrade for AM General Military REV HUMVEE vehicles and will require modifications to vehicle platform for installation. The GNX4 caliper with its unyielding strength and superior piston design generates positive pedal response and high clamping efficiency with a substantial weight savings over original calipers. The caliper feature a natural aluminum finish protected by a durable clear coat anodizing. Forged billet aluminum bodies, stainless steel pistons, and high-temperature seals put an end to the rust, bore pitting, and seal failures that plague many OE caliper design. Stainless steel pistons delay the heat transfer from the pads while the aluminum calipers dissipate the heat quicker than the OE cast iron calipers. Cooler operating temperatures translate into longer service life, regardless of the driving environment. Note: rear kits do not come with provision for parking brake.
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.
| Kit Summary | |
| Axle Offset | 0.00 |
| Caliper Type | 4 - Clear Anodize |
| Min Wheel Diameter Req'd* | 16 |
| Mount Type | Lug |
| Rear End Axle | OEM |
| Rotor Diameter | 12.00 |
| Kit Components & Specs / Rotors | |
| Bedded | No |
| Design Type | HP |
| Dynamically Balanced | No |
| Left Hand - Part No | 160-9535 |
| Material | Iron |
| Outside Diameter (in) | 12.00 |
| Right Hand - Part No | 160-9535 |
| Style | Plain Face |
| Surface Finish | Plain |
| Type | 53 Vane |
| Vane Count | 56 V |
| Width (in) | 0.95 |
| Parts & Accessories / Caliper Parts | |
| Bleed Screw Kit | 220-0627 |
| CrossOver O-Ring Kit | 130-10540 |
| O-ring Kit | 130-11197 |
| Pad Retainer | 180-11198 |
| Replacement Piston 1 | 200-9846 |
| Replacement Piston 2 | 200-9846 |
| Kit Components & Specs / Calipers | |
| Brake Pad Area (In²) | 11.15 |
| Brake Pad Plate | 9115 |
| Brake Pad Volume (In³) | 4.07 |
| Finish Color | Clear Anodize |
| Left Hand - Part No | 120-10754 |
| Mount Type | Lug |
| Pad Compound | SM |
| Piston 1 Bore (in) | 1.88 |
| Piston 2 Bore (in) | 1.88 |
| Piston Area (In²) | 5.56 |
| Piston Count | 4 |
| Piston Type | Stainless |
| Right Hand - Part No | 120-10754 |
| Type | GNX4 |
