What size rotor is this caliper designed for?

This Wilwood ST AERO4 caliper is specifically designed to work with brake rotors that are 1.25 inches thick. It's important to match the rotor thickness to the caliper for proper fitment and performance.

What is the piston configuration in this caliper?

This caliper features a staggered piston setup. It has one piston measuring 1.75 inches and another measuring 1.50 inches. This configuration helps to ensure even pressure distribution across the brake pad.

What does the anodized finish on the caliper do?

The anodized finish on the caliper body provides a durable surface that helps to resist corrosion. This is important for maintaining the caliper's appearance and structural integrity over time, especially in various weather conditions.

Wilwood ST AERO4 Caliper 1.75/1.50 1.25 Rotor 120-16087

Name: Wilwood ST AERO4 Caliper 1.75/1.50 1.25 Rotor
Brand: Wilwood
SKU: wilwood-wilwood-st-aero4-caliper-1-75-1-50-1-25-rotor-t14-581504
Price: 718.96 USD
Availability: BackOrder

Wilwood ST AERO4 Caliper 1.75/1.50 1.25 Rotor

$718.96

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Wilwood ST AERO4 Caliper 1.75/1.50 1.25 Rotor. This brake caliper is a solid option for improved stopping power.

Key Features

This kit includes a right-hand ST AERO4 caliper.
The caliper is designed for rotors that are 1.25 inches thick.
It features staggered pistons, with one at 1.75 inches and another at 1.50 inches.
The two-piece caliper body is anodized for a corrosion-resistant finish.
This is a performance brake caliper from Wilwood.

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Product Details

What you get with this Wilwood kit is a right-hand ST AERO4 caliper, designed for use with a 1.25-inch thick rotor. This caliper features a two-piece body with staggered pistons: one at 1.75 inches and another at 1.50 inches. This piston arrangement is key to generating consistent clamping force across the brake pad, which helps improve braking performance over stock calipers.

The AERO4 caliper is a well-built unit from Wilwood, known for their performance brake components. The caliper body is anodized for a durable finish that resists corrosion. This caliper is intended for applications where you're looking to upgrade your braking system for more assertive stopping power, whether that's for spirited driving or heavier vehicles. The staggered piston design is a common feature in performance calipers, working to ensure even pad wear and optimal braking efficiency.

When considering an upgrade like this, it's important to ensure it's compatible with your existing brake system components, such as the master cylinder and rotor size. Wilwood calipers are often paired with their own rotors and brake pads for a complete, matched system, but always check the specific rotor dimensions this caliper is designed for, which in this case is a 1.25-inch thick rotor.