The GP320 System features Wilwood’s competition proven dynamic rotor mount system, specially treated Super Alloy lightweight steel alloy rotors, and the highly efficient clamping force of the GP320 billet caliper for the most positive and fade-free performance available for sprint racing.Component Features: GP 320 Billet Aluminum 4 Piston Calipers with Four small pistons provide balanced distribution of the pad load for improved response and longer pad wear. Super Alloy Rotors: Unlike ceramic coatings that can flake away from the base metal during high heat cycling, Wilwood’s Super Alloy material controls heat transfer and provides a durable surface that can generate high friction for long, trouble-free duty cycles without the need for recoating. Dynamic mounting with Wilwood’s t-nut system isolates all thermal stress and distortion at the rotor mounting points caused by the different temperatures and expansion rates between the lightweight alloy steel rotor and the aluminum rotor mount plate. The rotors stay flatter and run truer to eliminate any possibility of pad knock-back or deflection. Dynamic Mount Rotor Plate: Lightweight billet alloy plate is machined with the slots to accept the rotor bolt t-nuts and adapt the rotor directly to 3 bolt sprint hubs. Wilwood 6211-CM Brake Pads A rigid caliper mounting bracket with premium grade fasteners and shim washers are included for secure, deflection free mounting.
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.
| Download Name | File Size |
| ds800.pdf | 246.95KB |
| Kit Components & Specs / Rotors | |
| Bedded | No |
| Design Type | Alloy Scalloped |
| Dynamically Balanced | No |
| Left Hand - Part No | 160-11217 |
| Material | Super Alloy |
| Outside Diameter (in) | 10.50 |
| Right Hand - Part No | 160-11217 |
| Style | Drilled |
| Surface Finish | Plain |
| Type | Super Alloy |
| Vane Count | 24 V |
| Width (in) | 0.78 |
| Parts & Accessories / Caliper Parts | |
| Bleed Screw Kit | 220-7496 |
| CrossOver O-Ring Kit | 130-10540 |
| O-ring Kit | 130-3602 |
| Pad Retainer | 180-3861 |
| Replacement Piston 1 | 200-8488 |
| Replacement Piston 2 | 200-8488 |
| Kit Components & Specs / Calipers | |
| Brake Pad Area (In²) | 3.65 |
| Brake Pad Plate | 6211 |
| Brake Pad Volume (In³) | 1.03 |
| Finish Color | Type III Ano |
| Left Hand - Part No | 120-15753 |
| Mount Type | Lug |
| Pad Compound | CM - Composite Metallic |
| Piston 1 Bore (in) | 1.25 |
| Piston 2 Bore (in) | 1.25 |
| Piston Area (In²) | 2.46 |
| Piston Count | 4 |
| Piston Type | Stainless |
| Right Hand - Part No | 120-15753 |
| Type | GP320 |
| Caliper Type | 4 - Type III Ano |
| Mount Type | Lug |
| Rotor Diameter | 10.50 |
