GiroDisc Slotted Rear Brake Rotors for CT4-V Blackwing (A2-318)

Description These GiroDisc 2-piece rotors are a direct replacement for the rear rotors on the CT4-V Blackwing. The 2-piece, fully floating assemblies help shed unsprung weight and rotating mass from the front axle of the vehicle. The rotor rings are machined from a proprietary casting made of high-carbon iron formulated to GiroDisc’s specifications. This superior metallurgy results in a rotor that holds up better, and the 48 curved vanes act as a centrifugal pump pulling air in through the hub to effectively cool the rotors under hard use. The 2-piece design means a reusable hat which can be attached to new rings (part number D2-318) when they need to be replaced. All major components including the hats, rotor rings, and drive pins are manufactured in-house at our facility in Bellingham, WA from domestically sourced materials. The hat is made from 6061-T6 aluminum and coated in a black anodize finish. The drive pins are made from a high-strength steel alloy and cadmium-plated for corrosion resistance. All rotors are assembled with spring clips and Belleville washers for race-ready float while also being street-friendly with no noise from loose hardware. The minimum thickness at which we recommend replacing these rings is 26mm. We also recommend replacing them if a crack leads to the edge of the ring. How do GiroDisc brake rotors compare to the Paragon two-piece set up for the CT4-V Blackwing? GiroDisc is a completely different tier when it comes to overall quality. GiroDisc competes with Brembo, PFC, AP Racing and Alcon.  Paragon product is similar to other Chinese supplied two-piece rotors. Their metallurgy is on par with what you would find in replacement rotors from AutoZone.  What that means is that they do not do well in high stress applications.  Their assemblies are as much as five pounds heavier than GiroDisc for the same application.  The CT4-V Blackwing is a perfect example of this.  GiroDisc brake rotors come in at 24.0 pounds each. Paragons weigh 27.8 pounds and still don’t last as long despite the extra mass. Sold and priced per pair. Fits 2022 and newer CT4-V Blackwings