What makes the Spec-37 iron alloy special?

The Spec-37 iron alloy is a proprietary formulation derived from military-spec rotor technology. It's designed to withstand extreme temperatures and offers high resistance to distortion, warping, cracking, and wear.

What is the purpose of the black e-coat finish on the GTB rotor?

The black e-coat finish on GTB rotors is applied to provide an additional layer of corrosion resistance. This makes the rotor a better choice for applications where exposure to the elements or road salt is a concern.

How does the curved vane design benefit braking performance?

The 60 curved vane design is engineered to maximize airflow through the rotor. This increased cooling capacity helps dissipate heat more effectively, leading to longer rotor life and more consistent braking performance under heavy use.

Wilwood GT60 Curved Vane Rotor 15" x 1.5" Black SPC-37-LH-BL

Name: Wilwood Rotor-GT60 SPC-37-LH-BLK 15.00 x 1.50 - 12 on 9.75in
Brand: Wilwood
SKU: wilwood-wilwood-rotor-gt60-spc-37-lh-blk-15-00-x-1-50-12-on-9-75in-t14-139971
Price: 661.66 USD
Availability: InStock

Wilwood Rotor-GT60 SPC-37-LH-BLK 15.00 x 1.50 - 12 on 9.75in

$661.66

Only 2 left in stock

Wilwood GT60 Curved Vane rotor with a 15" diameter and 1.5" thickness, made from proprietary Spec-37 iron alloy for extreme temperature resistance.

Key Features

This is a Wilwood GT60 Curved Vane rotor with a 15-inch diameter and 1.5-inch thickness.
Manufactured from proprietary Spec-37 iron alloy, developed for extreme temperature resistance and to prevent distortion, warping, and cracking.
Features a black e-coat finish for enhanced corrosion resistance.
Includes Wilwood's GT Series asymmetrical face slot pattern for improved braking performance.
Each rotor is individually dynamically balanced for smooth, vibration-free operation.
The 60 curved vane design provides high cooling capacity for extended service life.

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Product Details

Wilwood's GT60 Curved Vane rotors start with a proprietary iron alloy, Spec-37, which is a direct descendant of materials used in military-spec rotors. This alloy is specifically formulated to resist distortion, warping, cracking, and wear, even under extreme temperatures. The GTB version, like this one, adds a black e-coat finish for improved corrosion resistance, making it a solid choice for applications where rust is a concern.

These rotors feature Wilwood's proven GT Series asymmetrical face slot pattern, designed to help clear dust and gas for consistent braking performance. Each rotor is also individually dynamically balanced to ensure a smooth, vibration-free experience at any speed. The 60 curved vane design offers exceptional cooling capacity, which translates to longer service life and reliable performance during demanding use like short track racing or road course competition.

This rotor measures 15 inches in diameter and 1.5 inches thick, with a 12 on 9.75-inch bolt circle. It's built for high-performance braking where heat management and durability are critical.