Vehicle Fitment
This part is universal
- Fits Models with 298.5mm (11.75") x 25.5mm (1") Brake Rotors.
Product Details
GM-Metric® Iron Single Piston Floating Brake Caliper (120-9333) by Wilwood®. These all new cast, not rebuilt iron calipers are bolt-on replacements for 1978 and later GM Metric calipers widely used in "spec" racing categories and low cost disc brake conversions. Requires use of hardened Wilwood slide pins (sold separately), request part no. 230-0619 (slide pin kit) contains 4 slide pins, enough for two calipers.
Specifications
| Caliper Body Material: Iron |
| Caliper Color: Silver |
| Caliper Construction: Fixed |
| Caliper Mount Side: Universal |
| Caliper Type: GM-Metric Iron |
| Driving Style: Performance / Racing |
| Mount Type: Floating |
| Pad Area: 8.7 in² |
| Pad Plate: D154 |
| Caliper Total Piston Area: 3.14 in² |
| Piston Material: Stainless Steel |
| Piston Quantity: 1-Piston |
| Piston Size: 2" |
| Brake Pad Volume: 2.9 in³ |
| Maximum Rotor Width: 1.04" |
| Maximum Rotor Diameter: 11.75" |
| Minimum Rotor Diameter: 11" |
Features
- Cast iron strong body
- Stainless steel pistons
- High temperature seals
- Proudly manufactured in the United States
Wilwood iron GM Metric calipers combine new part quality with modern machining precision. There are two piston size options to assist builders with properly building static bias into a car. Previously, builders using the metric calipers generally had to mount the same size calipers on all four wheels. This drastically limited the tuning options and often created front to rear bias ratios that were not conducive to good handling and stability under hard braking. Some builders, and other brake suppliers, chose to offer re-machined OE calipers to provide a bias tuning option. Unfortunately, re-machining a used casting that was never designed for the larger bore size, can create real compromises in strength, reliability, and performance.
To address these needs, Wilwood has tooled two separate castings that are fitted with either 2.75" or 2.00" stainless steel pistons and high temperature bore seals. Each casting is designed specific for its intended bore size. The calipers are strong and precise, without unnecessary added weight from oversized castings. The stainless steel pistons resist corrosion while helping to slow the heat transfer from the pads. The high temperature seals provide long service life when used in hard braking applications and maintain their resilience to provide positive piston retraction on release. In addition to the optional piston sizes, two models are available with slide pin vibration dampers installed to help reduce rattle and other noise.
All Wilwood GM Metric Calipers use the standard D154 type brake pads. The complete range of Wilwood high performance and racing pad compounds is available to match response, friction, and temperature range to any application.
Wilwood® Engineering designs and manufactures high-performance disc brake systems. Since founding in 1977, Wilwood has developed a substantial matrix of brake components and engineering techniques that allow us to quickly and reliably create brake systems for almost any application. Their 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.
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