GiroDisc A2-318 2-Piece Slotted Rear Rotors for 22-25 Cadillac CT4-V Blackwing

Vehicle Fitment

• 2022-2025 Cadillac CT4-V Blackwing - rear axle (OE rear calipers, standard brake setup)

Features

• 2-piece floating rotor design - 6061-T6 aluminum hat + high-carbon cast-iron rotor ring to reduce unsprung and rotational mass
• Slotted & vented disc surface - enhances pad bite, helps purge gases/debris, and improves braking consistency under repeated use
• Curved-vane internal ventilation - draws cooling air through the rotor to improve heat dissipation under heavy or repeated braking
• Floating-mount hardware with cadmium-plated high-strength steel drive-pins, Belleville washers and spring-clip retainers - allows thermal expansion and self-centering while preventing noise or vibration common to floating-rotor kits
• Direct bolt-on replacement - fits stock rear hub and calipers on CT4-V Blackwing with no modifications required
• Reusable hat design - when rotor rings wear or warp, only the rings need replacing, saving long-term cost and waste
• Reduced unsprung & rotational mass vs OEM - improves rear suspension response, braking modulation, and overall handling feel under braking or dynamic driving
• Manufactured in USA - high-quality materials and precise machining for durability and performance

Specifications

• Part Number: A2-318
• Rotor Type: 2-Piece Floating Rear Rotors (slotted & vented)
• Material: Cast-iron rotor ring + 6061-T6 aluminum center hat (anodized)
• Mounting: Floating-mount with alloy steel drive-pins, Belleville washers, spring-clip hardware
• Sold As: Pair (rear left + right rotors, with floating-mount hardware)
• Orientation: Rear axle / rear brakes only

Included Components

• 2x Rear brake rotors (left + right), 2-piece slotted & vented design
• Floating-mount hardware (drive-pins, washers, spring clips / fasteners) for bolt-on installation

Product Description

The GiroDisc A2-318 rear rotor set is a premium, direct-fit performance upgrade designed specifically for the 2022-2025 Cadillac CT4-V Blackwing. By replacing the factory rear rotors with a floating 2-piece aluminum-hat + cast-iron rotor design, A2-318 reduces unsprung and rotational mass - which leads to sharper rear suspension response, improved braking modulation, and more predictable handling under braking or aggressive driving.

The slotted and vented disc surface, combined with GiroDisc's curved-vane internal ventilation, helps dissipate heat efficiently and purge pad-gas and debris under repeated heavy braking - reducing fade and ensuring consistent braking performance. The floating-mount hardware allows the rotor to thermally expand while self-centering, and anti-noise washers ensure quiet operation at cold start (no rattles). Because the rotor rings are replaceable, long-term maintenance is more cost-effective: when the rings wear or warp, you only need to replace the rings, not the entire rotor assembly. A2-318 delivers a robust, high-performance rear-brake upgrade for CT4-V Blackwing owners who want improved braking performance, reduced weight, and better driving dynamics - whether for spirited street use or track-day driving.