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Auto Barn
Est. 1957
Wilwood

Wilwood Caliper-Aero4 - Red 1.12/1.12in Pistons 0.81in Disc

$575.19

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Wilwood Aero4 Red Brake Caliper with 1.12in pistons. This forged caliper offers heavy-duty stopping power for road or track.

Key Features

  • Fits Wilwood caliper applications with radial mounting.
  • Forged aluminum body construction for strength and reduced weight.
  • Features dual 1.12-inch pistons for effective braking force.
  • Designed for use with disc brake rotors from 12.88" to 15.00" in diameter.
  • Updated internal fluid ports eliminate external crossover tubes for a cleaner assembly.
  • Finished in red for a distinct visual upgrade.
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About this part

Product Details

This is the Wilwood Aero4 forged four-piston brake caliper, finished in a striking red. It's built to handle serious stopping demands, whether you're on the street or pushing your vehicle on the track. The Aero4 caliper brings race-proven technology into a versatile body design that can adapt to a wide range of applications. It uses radial mounting and offers flexibility in piston volume, making it suitable for rotor diameters from 12.88 inches up to 15.00 inches. This caliper is the latest update to Wilwood's W4A / W6A series, featuring an improved internal fluid port design that gets rid of external crossover tubes and the large center bridge assembly. This updated design contributes to a cleaner look and potentially improved fluid flow dynamics.

The forged aluminum construction makes this caliper strong yet relatively lightweight, a key factor in reducing unsprung mass which can improve overall vehicle handling. The dual 1.12-inch pistons are designed to work with a .81-inch disc thickness, and the internal fluid ports mean a more compact and robust assembly. This caliper is a solid choice if you're looking to significantly upgrade your vehicle's braking system for more demanding use, offering a substantial improvement over stock components. It's designed for applications where consistent, powerful braking is essential, even under heavy loads or repeated stops.

When planning your brake upgrade, remember that calipers are just one part of the system. You'll want to ensure your master cylinder, brake lines, and rotors are also up to the task to get the most out of these Aero4 calipers. Wilwood offers a range of compatible components, so you can build a complete, high-performance braking setup.

Specifications

Brand
Wilwood
Manufacturer Part #
120-14004-RD
UPC
889545071177

Frequently Asked Questions

Wilwood Caliper-Aero4 - Red 1.12/1.12in Pistons 0.81in Disc

$575.19