What is the benefit of the Spec-37 iron alloy?

The Spec-37 iron alloy is a proprietary formulation developed by Wilwood. It's designed to withstand extreme temperatures and offers a high degree of resistance against distortion, warping, cracking, and wear, which is crucial for high-performance braking.

What does the black e-coat finish do?

The black e-coat finish on GTB rotors is applied for applications where corrosion resistance is a concern. It adds an extra layer of protection against rust and environmental factors.

Does this rotor come with a brake hat?

This product listing is for a single brake rotor only. A compatible brake hat and caliper assembly are required to complete the brake system, and these are typically sold separately.

Wilwood GT Rotor 14.25" x 1.25" Black Spec-37 160-9788-GTB

Name: Wilwood Rotor-SV-GT 72 SPC-37 -LH -BLK 14.25 x 1.25 - 12 on 9.19in
Brand: Wilwood
SKU: wilwood-wilwood-rotor-sv-gt-72-spc-37-lh-blk-14-25-x-1-25-12-on-9-19in-t14-140087
Price: 527.99 USD
Availability: InStock

Wilwood Rotor-SV-GT 72 SPC-37 -LH -BLK 14.25 x 1.25 - 12 on 9.19in

$527.99

Only 1 left in stock

Wilwood GTB 72 curved vane rotor, 14.25" x 1.25", black e-coat finish. Spec-37 iron alloy resists warping and cracking.

Key Features

This is a left-hand rotor.
Features Wilwood's GTB 72 curved vane design for improved airflow.
Manufactured from a proprietary Spec-37 iron alloy for high-temperature resistance and durability.
Asymmetrical face slot pattern helps clear dust and gas for consistent braking.
Black e-coat finish provides added corrosion resistance.
Rotor measures 14.25 inches in diameter and 1.25 inches thick.

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Product Details

Wilwood's GTB 72 curved vane rotors start with a proprietary iron alloy, a formulation derived from materials used in extreme-duty military spec rotors. This alloy is specifically chosen to handle very high temperatures while resisting distortion, warping, cracking, and wear. The GTB designation means this rotor also gets a black e-coat finish, adding a layer of corrosion resistance for applications where that's a concern.

These rotors feature Wilwood's GT Series asymmetrical face slot pattern, which helps clear dust and gas to maintain consistent braking performance. Each rotor is also individually dynamically balanced to ensure the smoothest possible braking feel. The dimensions are 14.25 inches in diameter and 1.25 inches thick, with a 12 on 9.19-inch bolt circle for the hat, making it a substantial component for a high-performance braking system.

When you're building a braking system that needs to perform under pressure, components like these rotors are critical. They are designed to work with a compatible brake hat and caliper assembly to create a complete braking package. Ensure you consult the full Wilwood catalog or a technical specialist to confirm compatibility with your specific vehicle and desired brake setup.