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Girodisc 2 Piece Front Rotors Cadillac CT4-V Blackwing

SKU: GIRA1-318
Price
$1,350.00
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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

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Shipping Information
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Cancellations / Returns

Original sales receipt or order number must accompany all return requests.

Forza Motor Works accepts returns for exchange, store credit, or refund within fourteen (14) calendar days of the delivery date, subject to the terms and conditions below. After fourteen (14) calendar days, all sales are final unless otherwise approved in writing by Forza Motor Works.

To be eligible for return, products must be in new, unused, unaltered, and resalable condition, including all original packaging, instructions, hardware, documentation, and accessories. Returned items must not show any signs of installation, use, wear, damage, modification, painting, coating, or alteration of any kind.

The following items are non-returnable and non-refundable:

• Special-order products
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• Any item specifically identified on the product page as non-returnable

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Products determined by Forza Motor Works to have been incorrectly shipped may qualify for replacement, store credit, or refund at our sole discretion. Manufacturer defects are subject to the applicable manufacturer's warranty policies and procedures. Forza Motor Works does not provide any separate product warranty unless expressly stated in writing.

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To obtain a Return Merchandise Authorization (RMA), please contact:

Forza Motor Works
Email: info@forzamotorworks.com

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Approved returns may be subject to a restocking fee of up to twenty five percent (25%) of the purchase price. Original shipping charges are non-refundable. Customer is responsible for all return shipping costs unless the return is the direct result of an error made by Forza Motor Works.

FITMENT, INSTALLATION & PRODUCT USE

Customer is responsible for verifying vehicle compatibility, fitment, and intended use prior to installation. While Forza Motor Works makes reasonable efforts to provide accurate product information and fitment guidance, final responsibility for compatibility rests solely with the customer.

Products that have been installed, test-fitted, modified, painted, coated, damaged, or otherwise used are not eligible for return.

Many aftermarket performance products are intended for off-road, racing, or competition use only and may not be legal for use on public roads in all jurisdictions. Customer is solely responsible for determining compliance with all applicable federal, state, and local laws and regulations.

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FORZA MOTOR WORKS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL DAMAGES ARISING FROM THE PURCHASE, INSTALLATION, USE, MISUSE, FAILURE, OR INABILITY TO USE ANY PRODUCT SOLD BY FORZA MOTOR WORKS.

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TO THE MAXIMUM EXTENT PERMITTED BY LAW, FORZA MOTOR WORKS' TOTAL LIABILITY FOR ANY CLAIM ARISING FROM THE PURCHASE OR USE OF A PRODUCT SHALL NOT EXCEED THE AMOUNT PAID FOR THE SPECIFIC PRODUCT GIVING RISE TO THE CLAIM.

By placing an order with Forza Motor Works, the customer acknowledges and agrees to all terms and conditions contained herein, including all return, exchange, warranty, and limitation-of-liability provisions.

Product Description

Upgrade the braking performance, thermal management, and durability of your Cadillac CT4-V Blackwing with the GiroDisc Two-Piece Front Brake Rotor Set. Engineered specifically for Cadillac's high-performance sport sedan, these premium brake rotors combine proprietary high-carbon cast-iron friction rings with lightweight aluminum center hats to deliver consistent braking performance during aggressive street driving and demanding track use.

The GiroDisc A1-318 system is designed as a direct replacement for the factory CT4-V Blackwing front brake rotors. Unlike a complete aftermarket big brake kit, this upgrade retains the original brake system architecture while introducing a motorsport-inspired floating rotor design.

One of the primary advantages of GiroDisc's two-piece construction is the separation of the friction ring from the aluminum mounting hat. This design allows controlled movement between the components as braking temperatures increase, helping accommodate thermal expansion and reduce unnecessary stress during repeated high-temperature braking events.

The friction rings are manufactured from GiroDisc's proprietary high-carbon cast iron, formulated specifically for demanding braking applications. This premium metallurgy is engineered to withstand elevated temperatures and repeated braking loads, making it particularly well suited for performance-oriented vehicles such as the Cadillac CT4-V Blackwing.

To maximize cooling efficiency, GiroDisc incorporates 72 curved internal cooling vanes within each rotor. These vanes function as a centrifugal pump, drawing cooling air through the rotor and directing it outward. The increased airflow helps dissipate heat during repeated heavy braking, supporting consistent braking characteristics and improved thermal management.

The center hats are manufactured from 6061-T6 aluminum and feature a durable black-anodized finish. By replacing the traditional all-iron rotor center section with lightweight aluminum, the GiroDisc system helps reduce unsprung weight and rotating mass at the front axle.

Reducing unnecessary rotating and unsprung mass can improve suspension responsiveness and vehicle dynamics, particularly during rapid direction changes and demanding driving conditions. This makes the two-piece design an attractive upgrade for enthusiasts seeking improvements beyond conventional replacement brake rotors.

Each GiroDisc rotor incorporates a fully floating mounting system using high-strength alloy-steel drive pins. These precision-manufactured components connect the friction ring to the aluminum hat while allowing the movement necessary to accommodate thermal expansion during braking.

The drive pins feature cadmium plating for corrosion resistance and are assembled with spring clips and Belleville washers. This mounting configuration provides the controlled movement associated with motorsport floating rotors while helping minimize the unwanted rattling often found in traditional racing brake assemblies.

All major components, including the rotor rings, aluminum hats, and drive pins, are manufactured in-house at GiroDisc's facility in Bellingham, Washington, using domestically sourced materials. This manufacturing approach provides precise quality control throughout the production and assembly process.

Another significant advantage of the GiroDisc system is its replaceable friction-ring design. When the iron friction rings reach their service limit, they can be replaced independently of the aluminum hats, provided the existing hats and hardware remain serviceable.

GiroDisc offers replacement front friction rings under part number D1-066, allowing CT4-V Blackwing owners to maintain their upgraded braking system without purchasing an entirely new rotor assembly each time the friction surfaces require replacement.

For owners who regularly participate in track days, performance driving events, or spirited street driving, the GiroDisc A1-318 Front Brake Rotor Set provides a premium combination of thermal management, lightweight construction, durability, and long-term serviceability.

Fitment Notes

  • Fits Cadillac CT4-V Blackwing

  • Designed for the factory iron front brake configuration

  • Intended for the front axle only

  • Direct replacement for the original front brake rotors on compatible vehicles

  • Includes both left and right front rotor assemblies

  • Two-piece fully floating rotor construction

  • Designed for use with the original front brake system

  • Does not require conversion to an aftermarket big brake kit

  • Uses high-carbon cast-iron friction rings

  • Features lightweight aluminum center hats

  • Incorporates 72 curved internal cooling vanes per rotor

  • Includes preassembled floating mounting hardware

  • Front and rear rotors are sold separately

  • Replacement friction rings are available separately

  • GiroDisc recommends replacing friction rings at 32mm minimum thickness

  • Replace friction rings if a crack extends to the outer edge of the ring

  • Professional brake installation recommended

  • Follow the appropriate brake pad bedding procedure

  • Inspect calipers, pads, brake fluid, and mounting hardware during installation

Included

  • One (1) GiroDisc left-front two-piece brake rotor assembly

  • One (1) GiroDisc right-front two-piece brake rotor assembly

  • Two (2) proprietary high-carbon cast-iron friction rings

  • Two (2) CNC-machined 6061-T6 aluminum center hats

  • Preassembled floating drive-pin hardware

  • Spring clips and Belleville washers

Product Specs

  • Manufacturer: GiroDisc

  • Manufacturer Part Number: A1-318

  • Product Type: Two-Piece Floating Front Brake Rotors

  • Vehicle Application: Cadillac CT4-V Blackwing

  • Brake Position: Front

  • Quantity Included: 2 Complete Rotor Assemblies

  • Rotor Construction: Two-Piece Fully Floating

  • Friction Ring Material: Proprietary High-Carbon Cast Iron

  • Friction Ring Manufacturing: GiroDisc In-House

  • Center Hat Material: 6061-T6 Aluminum

  • Center Hat Finish: Black Anodized

  • Internal Cooling: 72 Curved Vanes Per Rotor

  • Cooling Design: Centrifugal Airflow

  • Floating Hardware: High-Strength Alloy-Steel Drive Pins

  • Drive Pin Finish: Cadmium Plated

  • Anti-Noise Hardware: Spring Clips and Belleville Washers

  • Floating Design: Race-Ready, Street-Friendly

  • Unsprung Weight Reduction: Yes, Compared With Factory Configuration

  • Rotating Mass Reduction: Yes, Compared With Factory Configuration

  • Replacement Friction Rings: Available

  • Replacement Ring Part Number: D1-066

  • Minimum Recommended Ring Thickness: 32mm

  • Aluminum Hats Reusable: Yes, Subject to Inspection

  • Installation: Direct Replacement

  • Manufacturing Location: Bellingham, Washington, USA

  • Materials: Domestically Sourced

  • Sold As: Complete Front Axle Pair

Product Features

  • Two-piece fully floating rotor construction allows controlled thermal expansion between the iron friction rings and aluminum hats, helping reduce heat-related stress during aggressive braking.

  • Proprietary high-carbon cast-iron friction rings are engineered for durability and consistent braking performance under the elevated temperatures generated during spirited driving and track use.

  • 72 directional curved cooling vanes promote airflow through each rotor, improving heat dissipation and supporting consistent braking characteristics during repeated heavy braking.

  • Lightweight black-anodized 6061-T6 aluminum hats help reduce unsprung weight and rotating mass while providing a durable mounting structure.

  • High-strength floating hardware with spring clips and Belleville washers accommodates thermal movement while minimizing the unwanted noise associated with traditional motorsport floating brake rotors.

  • Replaceable friction-ring design allows worn rotor rings to be replaced using GiroDisc D1-066 components while retaining serviceable aluminum hats, helping reduce long-term brake maintenance costs.