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  See all Brakes products
Wilwood GP320A-O-Ring Caliper - Anodized - 120-17359
The Wilwood GP 3230A billet four piston caliper is a compact, high efficiency performer. Weighing just 1.70 pounds, it was purpose built as an upgrade with increased pad size over two piston calipers on lightweight open wheeled racecars. Newly updated to a dual bleeder design, the caliper can now be installed both left hand and right hand inclinations. The GP 320A is also well suited for racing applications including karts, motorcycles, mini-sprints, and formula sports racers. The GP 3230A bridge configuration will accommodate rotors between .75" and .81" thick, with overall diameters between 9.00" and 11.50".

Caliper is full CNC detail machined from premium alloy billet. FEA structural analysis technology was employed to develop a design that minimizes weight and maximizes rigidity against deflection. Full width bridges are reinforced with four, high strength steel cross bridge bolts. The cross bridge bolts are coated for corrosion resistance and provide added resistance to deflection and body separation under high loads. Internal fluid ports with a single outboard bleeder provide quick and effective evacuation of gasses and spent fluid.

Clamping force is generated by four, 1.25" diameter, stainless steel pistons. The clamping force is spread evenly over the length of the pad to minimize backing plate deflection and promote balanced pad wear. The overall piston bore area provides an increase in clamping force over similar range two piston calipers. Stainless steel is used to resist corrosion and retard the heat transfer from the brake pad to the caliper body, seals, and fluid.

Features:
  • Caliper Type: 4 Piston
  • 1.25" Pistons, .235" Disc
  • Rotor Diameter: 11.50"
  • 3.65" Pad Area
  • Stainless Piston Type
  • Anodize
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Who is Wilwood?

Willwood Engineering Inc. was formed back in 1977 by Bill Wood. The company is known for manufacturing a high-performance disc brake system. 

Throughout the years, the company has continuously improved itself, along with the ever-changing advancement in-vehicle technology. 

Today, the company had extended its wheel designs to supply brake components for various vehicles, including agricultural equipment, utility vehicles, motorcycles, four-wheelers, military vehicles, and even snowmobiles.

A Brake for Every Need

Wilwood has an extensive inventory of brakes parts for various vehicles. With over hundreds of brake calipers, master cylinder, and rotor designs, not to mention the tons of brackets, fitting, brake lines, and valves, it has the right kit for every vehicle application you can think of.

Engineered to Perfection

The company entails the most advanced technology and software in designing and manufacturing its products. They use a finite element analysis and multiple testing procedure such as a dynamic and cycle test that helps them replicate real-world conditions and adjust their design accordingly, making the necessary correction even before they manufacture the actual product

Using only the finest materials available, they can create a product that meets its clientele's expectation whether it's for street use or for race application.

Wilwood has also been ISO Certified, making it compliant to all mandated processing procedures set by the regulatory board.

Purchase Wilwood Products at Vivid Racing

Your brakes are the most important component of your car. It is easy to make your car fast, but you have to make sure you can equally make it stop as well. 

Wilwood has the right product for you. With safety and quality at its core, they are the product you can surely trust. Visit Vivid Racing and check the list of parts that would fit your specific needs.

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